I never used to use drippers much at all,but then i started using bottom feed mods,so they became an all the time thing for me.I didn't have to many issues going from 18mg to 12mg,but my first drop was about a year and half ago,i went from 24mg to 18mg,and that one was horrible.Even with chain vaping,i was getting shaky,very irritated and horrible withdraw symptoms.I was nervous about making my second drop because i thought i would go through that again,but it turned out ok this time,i used more juice for the first week or so,but gradually slowed down some.I thought of going more gradually with it,but i win juice sometimes in contests and wanted to stick with the same levels that most vendors offer,so if i win some,i can get it in the mg i use instead of having to go up or down.I like 12mg though,so i doubt i will drop any more now,it seems to be my happy spot haha.