Hello and hope you are doing well.
There could be fatty food intolerance post surgery. So, in general avoid all food high in fat and cholesterol. Also avoid all food high in calories and include plenty of high fiber diet. Avoid all fried food, fatty red meat, whole milk dairy products and highly processed food. Include plenty of fresh fruits, high fiber vegetables, whole grains, lean meat and low fat dairy products.
Hope this helped and do keep us posted.