It was good to find you here and it looks you are finding a solution. It is so important not to give up, since there are so many alternatives ways.
We had a discussion about Cranial Sacral Chiro's a while back on another forum.
Someone had neck problems and so I have I. I get head tremors, it looks it comes from lifelong medication but it can also be from the neck. If I do certain exercises with my head it starts shaking found that info on the web).
It would be nice if your Dr. knew a list of people, I usually check Florida (Tampa area) and Massachusetts (Boston area).
Have my best wishes.