Thank you Nancy99n. I will post it in that community too.
So sorry to hear what you're going through.
I had TN, also grind and wear a night guard, and also hurt my TMJ joint. Luckily I worked past the injury. My face pain doc told me stop eating chewy foods like steak and pizza, to be careful how wide I opened my mouth, and whenever possible rest the joint by putting my tongue on the upper palate. Like saying the letter "N".
All that said, I don't feel I know enough about TMJ to properly answer your question.
Did you post your question in the TMJ community also?
Hopefully someone here or there has answers for you.