First, get a backup phone ASAP. He’s trying to stop you from calling for help...that’s escalation. You can get a burn phone at most drug stores or Walmart.
Second, call your police officer friend and tell her what happened. Ditto your DV contacts.
Another idea is to look into those home monitors they have for seniors that you wear around your neck. That way you can just hit a button to have someone call 911.
Your BIL sounds like a great guy. Can they move in with you for a while?
I’m very glad you have a doctor you can trust. This isn’t something he hasn’t seen before, so be truthful about what’s happening. The more people in authority who have this on record, the better.
STAY SAFE. You are not overreacting. This man is dangerous.
