As far as I can see it would make sense to do PERT (pancreatic enzyme replacement theraphy) at a low dose and then see who the body reacts. I am much less afraid of the idea of having to constantly supplement enzymes instead of UDCA
In clinical practice, the diagnosis of Pancreatic enzyme insufficiency is usually based on an assessment of the patient’s clinical state, a self-report of bowel movements and weight loss in adults, or failure to thrive in children. Pancreatic enzyme replacement therapy (PERT) can be trialled, and symptom improvement would support a diagnosis of Pancreatic enzyme insufficiency.
PS. Have you had a colonoscopy?