Boyfriend just started law school and things have already started to go left....

So my boyfriend just started law school and he’s entering the midterm of the semester. Lately he’s been really rude and barely wants to communicate with me. I’m trying my best to be supportive but I feel like I’m not trying hard enough. What are some things I can do to help? Right now he’s not talking to me (this is the third time this has happened) and it’s getting really annoying.