It was months before I learned that diarrhea wasn't the norm. My thinking was liquid in = liquid out. What I did was to add a can of formula with fiber and increased my water. I use one to one formula to water. I am on gravity feed - 2 cans 0f 2Cal for breakfast and lunch and 1 x 2Cal plus 1 Jevity with Fiber for evening. I have used various brands over the years but basically the same mix. If I am trying to gain weight then I will add a can of the Jevity (250 cal each) to the first 2 meals and 1 can of water. I then drink extra water during the day. You might want to get a prescription for probiotics or ad a probiotic yogurt to the feeds or a separate bolus feed.