Mostly mine has been other way round, anti D's pushing me towards mania.
Meds might need to be adjusted. How about talking to your Dr, explaining the situation and seeing what they suggest.
The Dr's cant know what is or isn't working for us unless we talk to them, which in turn helps them do a better job for us and their other patients.
The goal is always stability and the ABILITY to live and enjoy our lives.
My bi polar sister has had your situation, where her meds for mania brought her down too much, way too much. Had to try something different. a frustrating but worthwhile process.
hugs...wish for all our sakes this thing was easier to manage