As Cathy said...excellent advice...eat as much as you can as long as you can. In about another week or so you will get hit with the taste bud thing. In my case..I wish it were that I 'lost' taste. It was worse. Everything tasted HORRIBLE (really salty in my case and still does). It was like you take a nice piece of apple pie and take the salt shaker...take the lid off...and dump the whole thing on the pie and try and eat it. You just flat can't do it. I'm just getting by nutritionaly with my scandishakes (I can get about 3 of them down a day, wich is about 1800 calories or so). Fatigue should hit you after about 3 weeks or so. Then it may hit like a ton of bricks. Be ready for some serious sleeping (if the Mucus will let you).
You'll see once you really get into this thing, everyday will be a bit different and it will be 'what's if store for me TODAY'.
Deal with it and move on down the road to recovery.