My husband never got sick so he honestly did not have an idea of how to treat a person nicely when the person was sick. Sometimes I would not show my face to even get food because as soon as I did, it was like, "Oh look! She's up!" and that would be it - he'd disappear, the kids and everything else would be my responsibility. He never thought to actually bring me food or something to drink. I had been known to drive myself to the doctor with a fever of more than 104 degrees!
So I will tell you what I wish I had done sooner rather than later. TEACH him what it is you need, and what you want him to do. Once he KNEW he was supposed to check on me once in a while, and make sure I had anything I needed (like water, tissues, medications), and make sure my temperature was not so high I was delirious, and could still be coherent enough to take any medication I was supposed to take, he DID it.
He FINALLY got really sick for a whole day-and-a-half, and I tended to him, and he finally really "got" (understood) WHY he should administer some TLC, get the person water, maybe make broth... because he appreciated it when it was done for him. He honestly did not know. What can I say - he came from REALLY good genes! His mother never went to the doctor either! Ha ha! I would have died many times over without modern medical care!
So teach him.