@Grace1 - us sufferers can get pretty easily offended about this stuff. I should have given you the benefit of the doubt because you're really stuck between a rock and a hard place.
What makes sense to you, that he should be fighting his illness, may not have any meaning to him whatsoever. In his mind, by going to work every day, he
is fighting it. It makes sense to me, too. By doing his job, by going home to whatever situation he has there, he's expending every ounce of energy he has. Whatever you want him to do on top of that is not going to happen, because he is literally already doing all he can do.