We do have the shoulder straps but then I think my left shoulder and back would hurt where I have an old injury.

But maybe I'll give it a try anyway. I know that typing long documents when I get home from work and on my days off doesn't help either.
It was baclofen that I used to take, just remembered this morning. I might need to try that again if they other things don't help. Last night I wrapped my left hand to keep it stable but then kept waking up because I couldn't bend it. Sheesh!
I think medical cannabis might help with stiffness too and also my stress when I get home at night. Maybe it will be approved here in Illinois.