Dangerous... you do not have a lot of time invested in this in the grand scheme of things. I’d advise you to take a giant step back out of this completely.
Maybe he will get better but that’s not on you. He can only get better and become stable if he wants too.
Do you know why he stopped his meds ?? Not that it really matters
As a person with Bipolar I’m usually kinda rooting for Bipolar people who are struggling.. he’s not struggling he’s exploding. I fear for your safety, maybe the next time he will hit something besides the wall.
Just walk away quickly