I think I read at some point that the inventor of the e-cig smokes the occasional cigarette now and then.
It really depends on your expectations. When ecigs were fairly new, I quit for 6 weeks, but I'm a stress smoker and went back to work full time and back to smoking. I would periodically vape, and that meant I was vaping when I couldn't smoke and only then, pretty much. I wasn't really trying to quit at that point just reduce my cigarettes.
This time around incipient COPD was kind of the driving force. It still took me time to reduce, and it took time to get to my first cigarette free day, but that was my goal, and I eventually achieved it. I fell of the wagon rather hard after my year anniversary and that was harder because my lungs had recovered and etc., but with ECF's help I was able to get away from cigarettes again, although I'm not sure how confident I am in putting up a quit banner just now.
However, different situations for different folks. Some folks smoke one or two cigarettes a day for a LONG time as they move toward quitting and some final, precipitating event makes the switch.
You certainly have to want to get to zero cigarettes to achieve it, and if that is your goal, well, I'm sure you will get there in time.
You may have to experiment with some things, for me this situation (since you clearly don't seem to be lacking nicotine, even at low levels and you weren't a heavy smoker) just cries out for Whole Tobacco Alkaloid juice, which I won't say a ton about, but they're basically substances in tobacco besides nicotine (MAOI-As and -Bs) that are responsible for a feeling of satiation and enjoyment and well, they can be somewhat key to some people when they transition. Because there is no combustion involved, WTA is definitely safer than smoking, it really is. Do not be deceived, tar is actually an MAOI in its own right (per an NIH study) so you will still detox and it will still feel difficult. I'm glad I used it as I transitioned it definitely helped with the sensation of "I want to chew through my own arm or someone else's" that hit me at about 3 pm every day.
Everyone responds to them differently, but it might be worth a try Manufacturers in order of price AND efficacy are Aroma eliquid, Umbavapes/Ohm's vapes, and Mother's milk, which looks and tastes exactly like dirt, if you ask me. I would NOT start with MM, but that's me.
Best of luck, and certainly a great deal of what you are experiencing is normal. I know some magical mythical unicorn vapers who took their first puff and rode off into the sunset, but I was most definitely NOT one of them.
Good luck! Keep up the hard work and it is HARD WORK.
Anna