i duno, it's just a guess, pls dun be offended by what i say

i am just wondering if a small (or a weeny tiny part) could be psychological. it's like your know your dr decreased your med and in the deepest part of your mind (you may not be conscious or even admit to it) that you are losing a 'physical' / 'tangible' control over your illness or environment. So your body is unknowingly acting up a little, making it worse for you to deal with your symptoms. I wouldn't say you control you hypomania, but possibly the depression part. It's very much chemical things inside our mind that're affected and influenced by the surrounding/life events.

Dun worry, you're not be blamed. Just decreasing med by that much seems drastic. We all need time getting used to changes. Though you pdoc sounds absurd...