I would definitely cut some of your liquid back with glycerin or pg/vg in a smaller dropper bottle and just try it for a couple of days. BUT i was experiencing the same kinda fuzzy headedness and general odd feeling that you are explaining even after cutting back to like 6mg. I used to smoke 2 packs a day and im convinced, at least for my situation, that it has a lot to do with the withdrawls from all of the garbage in analogs.
I find that i feel just about the same cutting back to about 12 or so but when i got down to 6mg, while the weird feeling remained, i was jonesing like mad on top of it.