I can understand your having anxiety. Family can produce a lot. Sorry about your brother but I don't see that there is much you can do. You might want to block your uncle's number from your phone.

I had relatives try to tell me what to do with my father as he got to old to take care of himself but that is all they wanted to do is talk. None voluteered to come stay a while so I could get out of the house. So I understand about pushy family members.

Do what you need to do for your peace of mind.