Parrr, maybe try steel cut or slow cooking oatmeal? Cook it using a bit more water than directed. But stay away from the instant, microwave packets which are so highly processed and pure sugar that it's not really oatmeal anymore. Also try ripe avocado. You can spread avocado on toast, or in a sandwich in place of butter or mayo. It seems to help ease things along, and it's a good fat. It has fiber, but it is soluble fiber and won't get stuck.