I am scheduled for surgery on April 17th. Will be having it done at Ochsner Medical Center in New Orleans, LA. Started liquid diet yesterday, April 1st. Yesterday was fine, but today I am struggling a little. I can have up to 80 grams of protein and 600-800 calories a day from protein shakes and all the clear sugar free liquid and jello I want. I would appreciate any advice on how to deal with this diet.