Hi Kandi,
I'm glad you were able to find the post. It's surprising to me as well that swallowing and nutrition are not being addressed with your father. Is he being treated at a CCC? I had a SLP and a nutritionist as part of my team.
You may have to act as an advocate for your father to get him a referral to a SLP. Radiation is brutal and if he has already lost his ability to swallow halfway through, it's not going to get any better.
Remember... a squeaky wheel gets the grease

"T"