I am not qualified to say if that's DID, but I'll assume it is something like it in my response. It sucks not to know, and I wish I could help you in that regard, but I can't.

A few years ago, I would have advised you to let your alters come out on the internet and make friends there - it helped me. But the more my alter made friends, the less time I had. Now he's sort of taking over. So there may be dangers if you take that route.