Hi Kerry,
I think you need to kick away the 'he should be doing..' concept based on what you read on this forum.Try not to compare your husband with others because every individual has different reactions towards the treatment, both physically and mentally. We can't judge whether such behavior is normal or not. I was given a clear scan report 2 months after treatment and everyone was so happy to receive the news. People around including my husband wasn't aware that the side effects were still working in my body. I was still in physical pain and my energy had dropped to a level that after finishing my breakfast, I wanted to stay in my bed again. My husband had no time to 'push' me because he was busy at work and so my sisters-in-law (altogether 4) took turns to visit me and talked to me, told me what I should do, took me out for a walk...etc. The more they pushed me to do something, the more resistant I became. The root of the problem was I missed my job so much and I thought I could never be my old self. I missed my old 'normal' and all my relatives and friends had never gone through my sufferings and could not accept my 'strange' behavior. I ended up with a hospital stay in the psychiatric ward for a month. In six months' time after treatment, I was able to take up my full time job again.
I don't have good advice on how you can help your husband but just want to share with you my past experience which was quite similar to your husband's, to some extent. I am sure other more knowledgeable members here can offer you workable advice.

Karen