Sharon (jimshau) I’ve been dealing with the same issue with both hands for a couple of years. It can be debilitating for sure.
Something you may not have tried yet is kinetic tape. The stuff that you’ll see athletes wearing these days that looks like a strip of bandage or something. I know there are lots of opinions about it being junk science, but out of desperation, I tried it. Darned if it doesn’t help.
It come in rolls about 2″ wide. I cut a 4 or 5″ length. Split the first 2″ or so into two “legs” One goes on the thumb, one on the forefinger and then the rest runs the length of your forearm.
Somedays it does nothing, others I get instant relief. I have been unable to hold the bow, applied some and gone back to playing for an hour or more. I use a brand called MuscleAid, my wife uses KT brand because of the glue, so you may have to experiment. Hope you get a little relief
