sorry to hear the bad news, thought id share what i learnt during my dads treatment,he had very similar,and did 7 wks 5 days p/wk of the same treatment youve mentioned above. he had a peg inserted a week before starting,he continued to eat until he could no longer get anything down due to swelling.he did continue to drink,even if it was only a couple of sips of water each day ,this was for him to remember how to swallow,eventually he could bareley use a straw but did it as it was still a bit of normality to him,if you have a peg then that helps with weight and nutrition which is a very important factor.and in his case kept his weight loss to a very minimum,i think it was 2 kg over the 7 wks that he lost,he followed instructions right down to the bottom line,he used his mouth wash religiously and lots of bed rest and used his creams all day long on his face and neck to keep his skin moisturised from the radiation,and believe me it worked he ended up with skin as soft as a baby,lucky for dad he had no sickness at all.l hope this helps a little and wish you luck with everything you have ahead of you,and lm sure you will have plenty of advise to come from others...