Andrina, if you do not drink enough fluids, you will be in much worse shape, especially if you become dehydrated. When I was finished with my takedown, I ate small meals with snacks in between. Also, low residue diet, then introducing different foods, to see how it would work out. I also drink coconut water- 1/2 coconut water with 1/2 water. I usually drink around 50 ounces of fluids per day and I weigh less than you. Please understand that it takes a while to adjust. Eat those thickening foods-bananas, peanut butter etc. to help you through. Are you using Metamucil-I take Benefiber as suggested by my surgeon because it causes less gas in some patients. I also am underweight, but I eat all day. But I have always been this way. At this point, I also am pre-diabetic, according to my A1C levels, so I have a referral to a dietitian to help me balance my diet and hopefully gain weight. The good thing is I am not losing weight, just not putting it on. I have never been afraid of eating, just trying to keep a balance so l don’t end up with Type 2 diabetes.