Wonder what his reasoning could be for only sticking with water? He must have something behind that.

Relearning how to live normally again after major surgery can take a long time to adjust. Maybe Reggie isnt comfortable enough with his new changes that he lacks the self confidence to even try. He may also hesitate due to fear of it burning or stinging. I found milk and chocolate milk excellent at neutralizing anything that would burn my mouth. I know he hasnt had radiation but his mouth is still probably very sensitive from the surgery so Im suggesting things like I would for someone who had rads. He may also be concerned about maneuvering his tongue properly.

How about trying to be a bit sneaky about it. Buy several items that you think would be appetizing to him and casually suggest they are there for whenever he is ready. Then leave it up to him.

I would suggest avoiding soda or carbonated things, they can burn. Im 5+ years out from rads and I still cant drink soda which I used to love pre-cancer. Try something like yoo-hoo. That feels very soothing on a sore mouth. I would drink that like crazy when my mouth was super sensitive from radiation. Most of us over 30 would probably remember drinking this as a child so it might do the trick to look appealing to Reggie. Another tasty one is chocolate milk. Many juices are acidic so they can be tricky too. Some of the Minute Maid juices found in the refrigerated section are pretty smooth like berry type juices. Also try some of the more adult type juice boxes like cherry or berry juice. Chicken noodle soup is a great easy to eat food for beginners, or chicken and stars. Canned peaches also are easy to eat and will slide right down.

Good luck and Happy Holidays!!!