What Should I do?

Me and my boyfriend have been on good terms after the break we had. Everything was good. Communication was on point. Everything just felt great again better than how we started out. Then all of a sudden he starts acting up. Like life literally hit him hard and everything in his life is just going wrong. I noticed he’s not going to work anymore but he’s not telling me anything. Like whenever he goes through shit he feels like he has to go through it alone but his energy towards me gets thrown off. I feel upset sometimes because I don’t know what to do. I try my best to be there for him but it gets hard because I’m away at college but I’m only an hour away... so he sees me every 2 weeks or so. Not sure what I can do to tell him out but he’s stressed and I’m annoyed with his attitude. He can be so stubborn . Don’t know what to do..... No it’s not someone else. No he isn’t cheating.... He’s been treating everyone this way. But how do I make him feel better?