[Artdog]

You can also teach mind games with food to keep him busy like folding an origami paper box and putting treats in there to see if he can unfold it and get the treats out. Oscar, my other cat, is a picky eater but he loves fish and will happily unfold a box for a fishy snack.

That's a brilliant idea.

I'd wait on the c/t 'till your vet thinks moderate activity is okay. Then train just like a dog or not. I'm practicing on Batman & Simba right now, and the only difference is that the non-trainee howls, but I guess dogs might do that do. Free - shaping is a great way to see what your cat is inclined to do.