Hi. I can understand the plight yo are going through. It is a fact that you only can find the foods and beverages which can hold more. we can suggest you and internet is full with all the suggestions. As you know, only colon has the power to absorb extra fluid and form a stool , which J pouch may do. The bowel training may take some months, do not keep a small heart at it. Find and write down daily what you have taken and what was the result on the bowel movement - this will give you permutation and combination of food and beverages most suitable. Loperamide may help. Go for small frequent food, drink plenty of plain water to avoid dehydration ( people do the reverse in hope that taking less water will solidify the stool). Applesauce,Bananas, Hard-boiled eggs, Hot breakfast cereals, Mashed potatoes Oatmeal, Peanut butter (creamy only), Plain pasta, Toast (white bread or other types without seeds or nuts as tolerable), White rice, Yogurt (with live cultures) all may be worth tried. Let us know about the progress.