Hi Atredies, Welcome to PC.
I have DID and my son has Bipolar. It can be rough for sure! I think for son and I, the biggest thing to overcome was understanding and patience. Son used to trigger me horribly (often intentionally) and it caused all sorts of havoc in my brain, making it very hard (and often impossible) to stay present. I know mine is a different type of relationship, but please don't hesitate to ask questions. Son and I have been able to work through a lot of stuff and now work to help each other instead of making things worse on either end.

Good luck to you and please keep posting. Nice to meet you!