I'm 4 days post op. I'm drinking (sipping) at least 4 oz of water an hour. I have protein shake drinks from the local grocery called 100 calorie muscle milk & another that is 100 calorie advantEdge. Each has at least 15 grams of protein & I drink 4 a day. It hurts when things hit my stomach but it's just still super sore & swollen from the surgery. For vitamins I found some at the local drug store that were gummies for the multi and a chocolate soft chew for calcium/D/K, & a B liquid that's absorbed under the tongue (sublingual). My doc told me not to step on the scale until a week post op. He said the swelling & extra fluids my body would take on due to the trama of the surgery would discourage me. So I got on the scale 2 days after surgery & I had gained a pound. I'm staying off till Wednesday.