I got diagnosed bp2 about 6 years ago, it took a few years to find the right combo of meds. I was set on lithium, wellbutrin and lamotrigine. I've been stable for a while and I thought it was strange I was still on so many meds. So I talked to my psychiatrist. He was very hesitant but we made a plan to taper off Lamotrigine very slowly (1 dose down every 2 months). 

At first I felt happy that I was going to do it. I secretly thought I might after all be misdiagnosed :P But after a few weeks I noticed some weird moodshifts and I got very irritable. Last week I crashed completely, I forgot hoe bad it can get. 
So I got in contact with my psychiatrist and we both decided it was better if I got back to my old dose. I'm not recovered yet but I do feel a little better than last week. Also a good feeling to know it will be better soon.

I do feel a bit silly because I did it and that I again thought I was misdiagnosed. But I'm glad I tried because I now know I should stick with what works. I'm very lucky to have found the right meds so I can lead a normal-ish life. But meh it also just sucks and I feel like crap.