I know how you feel.
I'm starting back to a career of more than 50 years of jazz bass playing after a two year lay-off.
All I can offer is to suck it up and don't over do it. Rest your fingers and your body in between and check with your Doc if you think something just isn't right.
Hang in!
( Oh, how i've come to hate that suggestion as I crawl into bed late at night. )
