@carol1951 I am sorry to read the struggles your husband is going through. As @colleenyoung mentioned, I am also a cancer patient with compromised kidneys from unrelated issues.

The biggest thing for me is that my entire medical team is in contact with each other. They are not in the same practice, but are physically about 5 miles away from each other. They keep email contact, and bounce information back and forth, always considering my chemo and dialysis together. I became very educated on how to watch for backslides in my health. We have chosen to go "marathon not sprint" for my cancer treatment, in order for my whole system, including kidneys, to stay as stable as possible. There sometimes has to be some give-and-take, unfortunately.
Ginger