Hi David,
Sorry to hear of your latest battle. I have a friend who was recently treated for throat cancer and he lost one third of his body weight and was wasting away. The radiation to his throat made it impossibe for him to eat. He was given a feeding tube and took his "meals" through that. He is now on the mend and regaining some of the weight. The "meals" were a nutritionaly balanced formula.
I hope you are able to overcome this issue.
Don