I was sleeved on 11/29 and am only down 26 lbs and when I was on week 3-4 it hurt me really bad to drink water too and my surgeon and nutritionist told me I needed to counteract the acid in my stomach with acid and it helped tremendously. They told me to try adding lemon or a lime to my water. Did it for a few days and I can eat and drink with no problem. If you are having a hard time reaching protein, try premier protein shakes and adding unflavored protein powder to yogurt or pudding or cottage cheese, anything you can tolerate. I just had my 6 week post op appointment and thought I was behind schedule with everything but my surgeon assures I was right on track with my journey because we’re all different, you might just be healing at a different rate. Stay positive and good luck on the rest of your journey!