I was thinking of a response and then I read the responses you already have. Pretty good crew we have here at OCF.
The water thing is a no-brainer. You need 48-64 oz of water. There are many alternatives, juices, milk, lightly sparkling mineral water, iced tea. Don't worry about the sugar I suspect you're not getting enough calories in either.
Like Paul my thinking is your diet sounds good on paper, I'm wondering if there are any nutrients you are missing out on. Are there any foods you are avoiding? At the moment no calories are bad calories. Oils, fats, sugars, are not the taboo they normally are. 2500 calories, thats the minimum daily requirement to avoid Christine B's lecture on the subject!
Of course you should have your diet reviewed by a dietitian (I presume a nutritionist is the same thing) but I found them pretty much useless. They suggest a whole list of things for you to try, but at the end of the day you just need to eat more! Thanks for coming, are you paying by cash or card?
So before you spend any more cash I'd be getting more fluids down, trying a broader range of foods and be sure to get enough calories in. I'd also talk to a pharmacist about what they can give you to help the digestion, but the main focus should be on your intake.
Good luck and let us know how you go.
Cheers, Dave (OzMojo) 19Feb2014 Diagnosed T2N2bM0 P16+ve SCC Tonsil.
31Mar2014 2 Cisplatin, 70gy over 7 weeks (completed 16May2014)
11August2014 PET/CT clear.
17July2019 5 years NED.