Disfuntional hands

I get so far and I have to stop. Lost a lot of motor function in 2 of my fingers needed for detail drawing. Shaky hands and numb.Chronic pain in arms and hands. Head doesn't always connect with my hand. Some days are better than others. Desperate to get back to art but it is a rocky up hill climb.
I suppose I should change my style, work more with my right hand, loosen up, but it is easier said than done.
If you can do something you enjoy keep doing it every chance you can get