Merri,
Your husbands diet doesn't sound too bad just as long as he is meeting his minimum daily requirements, adequate hydration, which is much more due to the metabolic cancer activity, and treatment, and should be working with a registered dietician. I went through several treatments just with Glucerna, 4-6 cans, which is like Ensure, through the feeding tube. I couldn't drink milk or sugar products, which burned my mouth.
Sounds like your husband is having radiation twice a day hence the 64 treatments?