I cook dinner and my husband with Alzheimer's says he's not hungry, he only wants to eat after I've cleaned the kitchen and put everything away. Then pouts that I don't want to get him his dinner. I offer him something easy to make but he wants the dinner I just made.
Good luck!
Per your profile - he works out 3 - 4 hours a day?? That's a lot! What is he doing? I'm sure he is doing better due to working out!