If your husband is not computer savvy, print out some things for him to read. If he is they type who wouldnt want to read it then you can 'accidently' leave it lying some place where he will be sure to 'find' it and read it. Of course it would be an accident that you left it lying around. LOL! Give it a try, let me know how you make out.

I dont know what SMART water is. I do know that he needs plain old H2O, just regular water (bottled or tap is fine). I was told iced tea, coffee, sodas, etc do not count that it must be plain old regular water. I know 2500 calories sounds like a lot but in reality its the bare minimum. He must take in enough every single day, trying isnt enough he MUST do it. I was one who learned the hard way, after becoming dehydrated and malnourished landed me in the hospital a couple times, I cant warn others enough about this. If he is dropping weight while he is taking in 2500 calories, then he needs alot more, maybe 3000 or 3500. His body is burning up calories at a tremendous pace fighting the cancer and the effects of treatment. While I was recovering many days a week I would drink very fattening 2000-3000 calorie chocolate peanut butter milkshakes. Some days I would drink 2 or 3 of them and I never gained an ounce. Think of it like a professional athlete who required 7000 calories daily during training. What your husband closely, he may not always be honest with telling you what he took in. Ive seen it many times before on the forum, its easier to just go to sleep then to get up and make something to eat or drink.

Hang in there. It gets difficult but it can be done.