Hi Allan
I had many of the same problems and thoughts with my PEG. I finally had to give up eating and go exclusively with tube feeding for the last 4 weeks of IMRT treatments and for another 6 weeks after they were over. I was doing 9 cans of Glucerna a day and was able to hold my weight fairly constant throughout. I was told the secret was Protein, Protein, Protein....
I was never hungry, so do not be afraid to go for it. It made a real difference for me.
Good luck !!!
KC