Hi so sorry to hear about your insane neighbour, on top of your struggle.
In answer to tinnitus question. I suffered really bad with it at the start of my injury, 17 months ago.
I still get it now but I use it as an indicator of over doing it.
It's my body telling me to slow up. So I listen to my body and rest.

Things will improve but as you know it will take time.

Good luck with your neighbour.
My dad always said
' don't get mad get even'
Carole x