You are quite right first thing first and the cleanse comes in first. Dandelion + milk thistle are 2 good choices = beware of milk thistle,it tends to deplete the potassium (if you get a lower blade shoulder pain stop the MT and take potassium supplements or better, eat food with potassium like green peas and miso).
Fat digestion primarily depends on the action of pancreatic lipase although other fat-hydrolyzing digestive enzymes are also responsible to a lesser extent for fat digestion. Some of the conditions that may result in a disruption in the digestion of fats includes ".
Potassium is essential for good pancreatic function - so potassium is highly important plus there is one single supplement I have used for pancreatic support : Gymnema Sylvestre.
When you will start with the kefir, you will also want some fiber along, be it rice bran or psyllium husk, you might even want to eat more raw food for extra figber that will brush onto the intestinal walls and haelp cleansing out whatever might impais absoprtion.