Rocky, I sure hate to hear about that. It's a decision we'll all be faced with, eventually, and I'm sure very few of us will be ready to accept it when the time comes.
I've been fighting hard for the past 10 years in a losing battle to keep shooting because of arthritis and multiple level disc herniations/ruptures in my spine. The doctors told me I can't walk. Spent a year in that %&*! wheelchair and couldn't stand it. Found out that I could learn to ignore the pain and get around without the chair. No, I can't walk normally or very far at a time, but I darn sure CAN gimp and totter around some.
Don't give up, my friend! Send the bow back and get the draw weight reduced or trade it off for a lighter draw bow. Or get yourself a compound. Use a release if you have to! For guys like us who know our days of shooting are numbered, it's a matter of how long we can go and I have absolutely NO qualms about using anything that will help me keep a bow in my hands. (I call my ProTec my 'orthopedic recurve'

) I've gotten an extra 10 years of shooting that the doctors told me would not be possible.
Good luck to you, and God bless.