Problems with my boyfriend of almost 1 year

Okay, so my boyfriend and I have been together for almost a year now, he’s 17 and I’m 16. For about the first 6 months of our relationship everything was going good and we were both so happy. Recently, we’ve been fighting A LOT over the smallest things and I keep telling him we need to talk about this and figure out how to stop. We’ve talked about it at least 10+ times and nothings changed. I think the fighting is because he’s bipolar and sometimes forgets to take his medication but I’m not sure. I don’t feel happy anymore but I really do wanna be with him. Any tips?