Welcome, poison oak!
It might just be a matter of adjusting dosages (especially as you say your response changed as the dosage changed). Your Pdoc (psychiatrist) can help with that. Best not to do that on your own.

As far as it making a sort of identity crisis... It's pretty common for people to have an adjustment period. The extreme highs and lows are what is familiar. To not have them is unfamiliar, and can seem dull in comparison. As this all is fairly new to you, that could well be a factor. Still, you don't want to feel overly zombiesque (haha, is that a word?) The goal is to control the extent of the swings to a manageable level without getting *too* flattened. Finding that sweet spot can take time.

When do you see your Pdoc next?