2 months ago, when I started vaping, it was to quit smoking cigarettes. Currently I'm down to 2-4 analogs at night and 6mg vaping during the day.
IMO, you should raise your nic level, to 9 or 12 mg, and get rid of those last few cigs. Nic isn't bad for you, cigs are. And you'll never be a non smoker by smoking.
I haven't had a cig in over 2 years. I'm fairly sure I cold quit vaping if I tried, but I haven't tried. (I stopped for 24 hours after some dental work. When I was smoking, 24 hours without a cig would have driven me crazy.)
I am off the nic. I may go back to low levels of nic, I'm not sure. Nic isn't really a health issue, and it has some benefits. I vape all the time, though. The habit is still there.
While I think I *could* quit vaping, the reasons that applied to quitting smoking don't apply to vaping. The health issues aren't the same. Vaping isn't free, but it's far, far cheaper than smoking was, at least for me. Vaping doesn't make me (and everything around me) smell bad. And I can vape in a lot of places where I wouldn't be allowed to smoke.
At this point, I'm not really expecting to quit vaping. A bigger question for me is whether I'm going to go back to using nicotine.