I am sorry about your brother. It sounds like he has some issues.

I’d be devastated if my brother didn’t speak to me but then we are close. It sounds your relationship with your brother is extremely limited as it is, you don’t even know if he works (not saying it’s your fault relationship is as such). But if it’s already extremely limited, then him not talking might not be such a huge change.

Now I see the issue is that it’s hard to see your parents. But you still can if you give a heads up, which most people do anyways. How often do you go to their house? We are close knit family too but honestly we aren’t in each other houses that often. Could you ever meet in a neutral territory? Them visiting you? Your brother not speaking to you, although is hard, shouldn’t stop you from seeing your parents. I think? Maybe I am just not understanding the issue