Ditto on the small sips at a time ALL DAY LONG. I even keep a small glass of water on my nightstand and may have a sip or two if I wake up. I also diluted the Premier shakes with decaf or hot water which makes them much easier to take---it still took me at least an hour to get one down. I now have about 1/2 of one in my morning coffee since I refuse to use powdered creamer. Jello, sugar free popsicles, Powerade Zero and Crystal Light also can count as water intake.
First pureed foods I tried were baked chicken breast, steamed cauliflower and cottage cheese. Baked the chicken in broth and seasoning and then added broth, plain greek yogurt, and Duke's mayo to the food processer bowl until it came out like a moist paste. Too dry does not work. Steamed cauliflower for about 12 minutes until really soft then added some "lite butter" and Montreal Steak seasoning and this is like garlic mashed potatoes. I have also tried baked salmon (yum), canned tuna (meh), green beans (meh). Baking up some cod fillets right now.
These foods worked great for me, I still have 10 days on pureed to go. At first I only put a tablespoon on the plate and have increased slowly to about 1/4 to 1/3 cup per meal. I take very small bites, savor them and swallow. No idea why but my program says no baby food, no soups.