I don't get it? What's the matter with these millionaire athletes?
It's not like Big Baby needs to do pushups to stay in shape. There are plenty of exercise equipment, like the BowFlex, where one can attach a harness, either to one's wrist or elbow, and still get a great upper body workout. Likewise, one can do squats using the same principals. He can save the free weights for the left side only.
Then, he can practice shooting with his left hand and start to become ambidextrous. This, in fact, had occurred back in school when a rightie was wearing a cast for 2-3 mons. His left hand took over and he was able to right with both hands, with similar clarity in weeks.