@ray666 I am thinking the word Vestibular therapy might help you with your search. I do understand it is not a top down problem🙂 but training your brain to compensate for the lack of balance is just as key as the physical part.
I went to what I call brain school - vestibular therapy— at Emory. A teaching hospital. I know in another town I lived in there was a Balance rehab facility which also taught this specialty
I wish you good digging for right therapist.
I learned long ago interview my therapist and I do not use the same one- just because I like them - or they’re five minutes down the road.