I found some of this is how yu think about vaping and/or the reasons for smoking to begin with. When analogs are taken away most people assume that their urge for them over an e-cig is the need for the nicotine which is usually not the case. If it was just a nicotine jag sending you back to an analog the easy fix is just having you use a stronger mgs of nicotine at those times. However that is often not the case.
Most analog smokers have more then nicotine to deal with when they quit the analogs. Often as big an addiction to the nicotine is the act of smoking itself - the holding, the lighting, the movement, any social events around it, the brain process that associates the act of smoking with certain pleasurable reactions - not only telling the body that nicotine is on its way but we often equate t with a moment to de-stress, relax, step away from other things and this all gets wrapped up in our heads.
Many people start out vaping and still using analogs. Often they start their vaping time in those places they could not or would not smoke before (IE sitting at the computer, indoors, etc) and continue the analogs in places they could/would smoke them before. So a good part of removing the analogs at those times is to start retraining your brain to understand that the e-cig will deliver that nicotine - it doe not need an analog and that the process of setting up the e-cig replaces the 'setting up' of the analog.
Some people found dripping as a bit more hands on and hep at getting over the need to do something with their hands as a prelude to inhaling nicotine. Having to drip e-liquid on the atomizer for the vape session is a good replacement through going through lighting an analog. Once you brain starts truly associating e-liquid with nicotine, as it will more quickly when you have to drip for each dose of nicotine, then seeing it in larger delivery devices that you only refill periodically is often good enough.
If you don't want to invest in additional devices to drip vape at certain times when you feel a big analog urge and your regular device does not seem to satisfy it then other things can help too. Determine when you have the greatest urge to pick up an analog and make that the times that you refill or fiddle with your clearomizer or cartomizer and you will probably find that this over comes the thoughts of picking up that analog to hold.
Which brings us to the 'feel' of the analog which is something that everyone has to get over to give up the analog and replace it with an e-cig device. Many find that if they started with vaping with something like the larger ego batteries the holding, feel and movement of using the battery is not a good initial replacement for the feel of an analog you have been used to for a long time. The addition to that 'feel' is often as hard to over come as the nicotine craving. Since, with your e-cig, you are holding a device that is giving you as much (maybe more) then you re used to that urge may not be a nicotine craving as such. Many find that buying a cigarette-like e-cig to use when they are tempted to pick up that pack of analogs - while its is not good for them for their all day habit - its different and special enough to tell their brain its the same thing as an analog and the nicotine is coming - whether you drip or use a cart or tank. This is not to say that you can't just start with a cigarette like e-cig and use it all the time but many often find the convenience of the bigger battery, longer charge, holding more juice works better most of the time - but it can really help to have one that feel like a cigarette when you are really being pushed to go back. The feel of holding something that feels just like an analog can be a good bridge. After a couple of weeks your brain will start to associate any handling of an e-cig in whatever configuration - and the handling of e-juice and the act of filling/refilling as step towards getting the nicotine and you won't miss the handling of an analog
Their are other tricks you can do to help too. Relieve your mind that you are not forcing it to go through withdrawal from nicotine by switching to an e-cig and actively work to make it understand that its getting its nicotine in a different way. Keep a pack of analogs around so its not afraid its going to have to deal with a big urge but do everything you can before giving in and taking one - but do it in a positive way - your brain hates negative re-enforcement for re-training. When you reach for that analog its as simple as making the deal that you should try getting the easier nicotine from the liquid in the e-cig by trying the e-cig first - the analog is there for backup so you can relax and try the e-cig. Then vaping until the urge passes would be the next step - if its still not enough then have the analog and try next time. Eventually, your brain will associate nicotine in a vapor easier to process then nicotine in smoke (ash) and will give you less urges to pick up an analog.
Another good 'training device' is the internet and videos when you get a sudden and strong urge to put down the e-cig and pick up the analog. This is especially true if you are a long term smoker and smoking is associate with social practices. Even if you are smoking alone the brain associates the fact that you smoke in social situations too and mimic that feeling. Use the internet and vaping video's to do the same thing. Simply surfing You Tube, finding a vaping video that might interest you and watching someone else vape and talk about vaping - whether its how to rebuild the coil on some atomizer you never heard of or a video blog of a vaper or a e-cig review you will be hearing about vaping and watching someone else vape right in front of you. This is going to turn the urge to smoke an analog into the desire to vape like you are seeing on your screen. I even know some people that set up a playlist of a few videos that are either new or new to them each day to watch on their phone while away from the computer to give them the vape urge to replace the analog urge.
The amount of nicotine you use can also make a difference and knowing that sometimes you might need more milligrams at certain times and less at others can be a big help. You have to take a bt of time and first analyze your analog smoking habit and what were probably your nicotine levels during the day to make the best choices for ho many milligrams to use.
The idea of a exact relationship between how many analogs you smoked in relation to how many milligrams you should use while vaping maybe a good place to start with your first e-juice bottle but the correlation that is used is not a very accurate one. We all smked differently, to how much of an analog we allowed to turn to ash without taking a hit, to how deeply we inhaled, to how long we held the inhale, whether we used s single draw or a double breathe technique to get the smoke in our lungs and how we exhaled, mouth, nose and even how slow or fast. And most of use never keep a constant level of nicotine in our blood, and while a low level can produce an urge to smoke because you are craving the nic fix, it does not happen all the time when the blood level drops at times your body is used to not smoking. If this was not the case yu would not be able to sleep without getting up on and off to smoke and bring the nicotine level up; yu would not be able to go all day long at work with only a smoking break twice a day and so on. Your body actually gets used to expecting different blood levels at different times and in different situations. The idea of keeping the same level of nicotine in your blood
to avoid urges to smoke came from the whole nicotine patch system but the fact that the blood levels cant vary may well be why some people fail as the body expects lower levels as well as higher levels and it is an important part of the physical need for nicotine. I believe this is why patches fail so often - the user has to much at times and then when they want the level to increase to feel the 'satisfying effects' the patch can't do that - so they use the analog as a way to change the blood level and that causes the program to fail.
The same is going to apply to vaping and can be approached in the same manner as handling a e-cig to replace the handling of a analog to replace that feeling or you may want to employ some different methods or routines.
Even if you went through a pack or more a day of analogs, if you really only puffed on half the cig and let the rest burn up it could equal to really being a a smoker of half of what you used to buy. You maybe used to lower blood levels during the day and while asleep but used to higher levels (because you smoked more analogs - not necessarily that you smoke more of each - just smoke more frequently) in the evening, around meal times, social events. watching TV etc. - what ever your practices were.
You also need to remember that with analogs 'lighter' does not mean less nicotine like 'light' sour cream means it has less fat. With analogs, unless it specifically says it has less nicotine 'light' means the flavor not the amount. A 1 pack a day smoker of light analogs that inhales most of each analog in a pack can have blood nicotine levels then the 2 pack a day smoker of a regular flavor who only inhales abut half of the analog an lets the rest burn in the ashtray.
Hopefully, you can see the picture now. It should be obvious that you will need to do the same with vaping. Starting around 12-18 mgs for most pack a day or more smoker is my usual advice (and my doctors) but having a bottle of 24 mg around to use at time the urge comes for an analog can solve the problem. The problem being that you have hit a time your body/brain is used to more nicotine and so urges you to go back to the analogs thinking that is where you will get 'more'. Giving yourself some e-liquid with more mgs in it during those times of the day when your body is used to and expecting higher nicotine levels. Also, more hits off the e-cig, closer together during this time can bump up the blood level if you don't have a e-liquid around that has more mgs in it.
Favor matters too and your brain associates flavor and whats happening - from analogs you are used to a tobacco taste (unless you always smoked flavored analogs). So even if you find yourself in a store or buying online and in the equivalent of a candy store, with vast arrays of flavors you can't wait to try. If you smokes a regular tobacco flavored analog then a blueberry flavored one is going to make the brain ignore the idea that you are 'smoking' even with a rise in the levels of nicotine in your blood. The urge you think is nicotine, if you are using a non tobacco flavor to start with may very well be the need to satisfy 'taste and smell' . Its better to start out with the tobacco taste (reg or menthol) that you were used to with the analog instead of a sweet or fruity mix. Go ahead and get the other flavor you want to try first to use when your are not being urged to pick up an analog but at the time you have the urge make sure your are doing your best to satisfy all the parts of an urge.
As you continue vaping over the weeks following your start you brain will shift from the idea of analogs to the idea of e-cigs and it will urge you to vape instead of smoke an analog. At that point what flavor, mgs, device etc. you use can be totally personal choice because you won't need that 'bridge' to change from the analog habit to vaping.
There is no one real recipe anyone can give you that will guarantee you will put down the last analog forever, so you really need to examine your own analog habit, discuss it with other vapers for input and so on until you formulate the recipe that satisfies you the most and makes it easy for you to move off analogs. One thing you want to do for yourself is make sure vaping is a happy experience for you to start with so your brain wants to continue doing it. If you find yourself in a negative situation forcing your body to accept vapor when it really has to have a analog in the early days - don't take it as a failure and set vaping up to feel like a negative practice. Be happy that you enjoyed vaping for most of the day and avoided analogs, smoke an analog and then put the pack away and go back to the e-cig. If, in the beginning, you set up a negative situation such as basically saying 'no - suffer - its the e-cig or nothing' the neg feelings around that are liable to stay around when you and make you feel that e-cigs were a lesser substitution which leaves you wanting then a good, enjoyable replacement that while still giving you nicotine has taken away the other 60 carcinogens you used to get from analogs. Be happy that you been able to not smoke 18 of the twenty you used to in a day and that vaping is as good or better then the 18 still sitting there - and not beat yourself up over the two that were used.
And there is no time frame. While I think that once a person starts vaping they should work towards never touching an analog again - i know that I will eventually meet someone who just can never do without those two a day. Of course taking the analog habit down to two a days is pretty good considering that person was smoking 20 or more.
Is the fact that you read posts and listen to videos where people say they switched complete to analogs in less then a week making you think still having an urge for an analog (or even giving into the urge) make you failure after 6 weeks? No. Not at all. Doing the switch in a few days like some report is a very low percent of the people that switch. Each person is different and needs different things to get to the point where analogs are out of their life. It does not matter how long it takes, but that your working on it.