This baffles me so much.

I have bipolar II severe depression for many years (had a couple hypomanic episodes in the begginning hence the diagnonis, which came up fairly recently (up until now it was "major depression" so nothing really worked)). Started Vraylar on January, started getting better in two weeks and peaked at a month. After a month of working better than any medication in the past (had motivation, started working again) I felt a decline in it's effectivness over a period of a couple months, up to a point I felt it's not working at all. 

Feels like I'm back to where I was before starting the medication, and it's been like this for a month or two. It's like I'm taking candy. Worst of all, I can't find any post or article mentioning or backing this up which makes me very frustrated since I finally found an effective antipsychotic (abilify, zyprexa, seroquel, all did nothing except improvement with Risperidal but had to stop because of bad side effects).

Can anyone relate? can this happen? what is wrong with me? why can't things just work?

Side note: I'm on 1.5, can't go up to 3- it make me feel worse and super tired the whole day