3-5 ml per day using different non-subohm gear, 0% nic. (0.6 ohm coils are lowest I vape).
For me it's just a behavioral thing since i got off the nic.
I don't know if ml's vaped is accurate measurement of anything since some equipment reallly sucks up the eliquid. And as others have said, also depends on whether you are optimizing your nic level.
If you are *craving* then you may bump up the nic a notch. If you are just a behavioral puffer like me, then there's not much you can do except change your habits around the behavior, i.e. leave the gear across the rooom on counter and walk over when you need to use it, go on short errands w/out your gear, etc. Everyone can habituate themselves to any behavior / habit and customize their experience.
I had a very clear picture of exactly what I wanted to accomplish after my first 6mos to 1 year of
vaping. That will be different for everyone! The first year I didn't try to do anything except get off cigs and did whatever it took.