I so understand the frustration of wanting to quit, but having trouble. I encountered my first vape about 7 years ago, quit for a month, then started a really stressful job and I'm sure you know how the story goes.
I agree with others saying you don't need to make huge, radical jumps. If you approach this from a state of calmness, it will be even better. When I quit this time, I was oddly CALM. I guess how ill I was had something to do with that. But, I went from being a 3 ppd smoker to a vaper. When I make up my mind to do something, no matter what, I usually do it. The fact that I was going to get diagnosed with COPD (probably) at my next doctor appointment and the 18 months of pretty much straight pneumonia also helped beat me into a state of reasonableness.
I was really only half awake for most of my quit time, LOL. One thing that did help me was to WIPE any quit attempts, as fast as I could, from my brain including former vaping and dual use. No point dwelling on failure, it tends to produce failure. Vaping having come a long way helped.
I started with my hardest cigarette to skip, the first one. I knew if I didn't, I would fail. I'd be smoking all day long, I know me, so to speak. I just kept delaying and delaying until I had my first cigarette free day.
Getting your nic right should help. Also, instead of panicking about smoking, OBSERVE your smoking, dispassionately. Try to figure out why and how come you are smoking, when you do. My hardest smoking to stamp out was stress smoking, which is not what I thought it would be. So, I stress smoked.... Until I decided to try something else. I developed a plan for stress to not include self-harm (which is kind of why I smoked those cigarettes-- I smoked them HOPING they would be the cigarette that "killed me." I have learned I can wish for death without actively seeking it out, etc. You almost have to befriend your smoking habit, figure out what it is "doing for you" exactly, and kinda go from there. If you don't know the whys and wherefores of your smoking, you won't be able to combat it.
I suffered. I suffered quite a bit. But, I kept reminding myself that if I developed COPD, I would ALSO suffer.
The good news on vaping, I have found, is that the suffering is temporary. It is rare for me to have cravings these days, and I kind of laugh them off, in a way.
Also, vape right before and right after (heck, even during) your cigarette. Pay attention to if it's perceived "satisfaction" is really there. I found it often wasn't what my "mind" wanted to trick me into thinking it would be. It's been a fair amount of time since I've really thought of smoking that much.
I wish you the best of luck, and as little misery as possible. Some folks just don't grab a vape, and ride off into the sunset on a unicorn. I was NOT that type of vaper, it was HARD.
It was also worth it. If I had to do it all over again, I would. The benefits far outweigh the negatives, for me. But, I had to get to vaping alone to discover them.
Best of luck,
Anna