If it was your left hand you can always focus on rhythm exercises. Quite literally, do everything you would ever do except don’t use your left hand. You can still practice string skipping, speed picking, Sweeping, and rhythm exercises. If it’s your right hand do everything legado. It literally will be an excellent time (sorry to say), to build-up the strength in your left hand. There is a way that you can start legado exercises without even picking. I’m hoping for a speedy recovery!