I was a chain smoker ... and now I'm a chain vaper. So I pretty much vape all the time. EXCEPT. Not in bed. I can stay in bed and read for hours without vaping. I think my old "never ever ever ever ever smoke in bed" mindset still rules, even though the danger is no longer present. I just can't do it.
Anyway, I vape 3mg nic MtL, usually 1.3-1.8 ohms at around 12-14 watts. If I wanted to cut down on how often I vape, I'd raise my nic level and lower my intake, but my cigarette addiction was really always much more about the physical action and having it in my hand and that whole process. I quit so many times, but not having the muscle memory comfort of picking up a cig / lighting / inhaling / having it in hand is, I think, what would always sabotage my quit. I needed the thing in my hand, and the inhaling and ritual MUCH more than the actual chemicals -- which, every time I quit, I was (eventually) able to get over. But I always continued to feel constantly bereft of the comfort I craved without smoking action/mechanics, which I've replaced with vaping, and so finally really been able to quit.