Im sorry this happened. It happened to mine as well. Its a long road but it passes faster than you think. I do want to ask you, did you have a surgeon look at the break? Mine broke just above her paw and they put the same cast on. It didnt help at all. I ended up with 5 weeks in a cast and 8 weeks confinement after surgery. Im not telling you this to alarm you, just so that you dont end up like I did. My vet was wrong ( no longer my vet)
That said, we tried to mix it up as much as we could. I had three different crates for her in different rooms. When she got unruly we put her in the smallest crate to calm her. She rarely walked at all. Just stood up and turned around. I bought a cheap stoller at walmart and jimmied the straps and took her for rides. We lowered her ceiling in her cage and padded the floor so that when she jumped she landed on cotton. We got tranquilzers from the vet to calm her. She was not really allowed to walk at all. We kept pee pads in her crates. we played hide the cheerios in our hands and she could guess with her nose. I held bully sticks and kongs for her (she couldnt put the pressure on her leg to hold her own)while I watched tv. We brushed her and massaged her body to keep circulation going. I think her break was likely alot worse than your pup. Bottom line is she is healing great *takes 6 months)She now runs around the family room now takes short walks and her radius and ulna are both healing (surgeon was shocked he said the ulna would never heal but she didnt need it) message me if you want more details...
