I am 13 days post op, gastric sleeve. I had my first follow up with the surgeon yesterday. He says all is well. Except I have been so fatigued. He says it is because of fluid and calorie deficiency. I am on the pureed food stage as set by my dietician, yet all I want, and can consume, are the protein shakes. And I can only drink about three a day, at best. I am drinking one full one in the morning. After that, I can only take a sip or two occasionally. Thursday, I am able to start soft foods, but I feel I'm a long ways from doing that, especially if I try to stay hydrated. Does it get easier?