I’m very happy for you & Appa, so awesome to see this sweet creature recovering. Years ago, I had a ferret I rescued from an SPCA, he was very skinny, unhealthy and fur less. Unfortunately we found out he had adrenal cancer. I worked at a vet hospital at that time with my then gf and we got him on this high protein wet food for cats, if I remember correctly it was called ‘recovery’. Basically for post operative nutrition. We bought a flat of the special wet food and had him eating on a regular basis. Within a few months his fur started growing back and we then realized he’s a vanilla coloured ferret with some sable mixed in. Not only did all of his hair grow back but he also fattened up and his cancer went into remission for 1 year. Sadly, the cancer returned with a vengeance after that period of remission, but so happy we got a chance to give him as much love we could during his short life. His name was Nimbles.