Yeah, I would stop, or at the very least get a professional opinion. And stay away from hobbies that beat the shit out of your hands.
Long distance cycling might not have a crazy mental workout but it’ll wear you out. You could do more challenging hikes, or you might need to replace it with 2 hobbies, I’m just some dude on the Internet.
Take care of your hands.
Is there a place you could row?