I had a lot of problems eating. I pretty much survived on scrambled eggs with yellow cheddar cheese, cottage cheese with those little containers of peaches and orgain (like ensure but with better quality ingredients). We bought one of those blenders but the shakes, soups, mashing potatoes, mac & cheese all had a consistency I couldn't stand. Don't take it personally if he doesn;t eat something you make. He'll lose some weight but should try to keep it up as much as possible. Ice cream might be okay too. I saw a specialist during treatments who gave me ideas of things to try. She said "ricotta cheese" is such an funny way several times a session. One other thing, tapioca pudding, that worked for me too.

Is he doing swallowing exercises and stretches with his tongue?