Thanks for the question about returning to a normal diet after distal pancreatectomy and splenectomy. I was very fortunate - I really did not have any dietary issues other than the typical post operative routine where they slowly advance your diet to ensure you tolerate food. My dietary restrictions are more related to continuing to have insulinomas and the diet restrictions that come along with managing blood sugars.
I had more problems with diet after my modified Whipple and that was a result of my intestines taking time to "wake up" after all of the manipulation.
In both cases I was able to eat a normal diet very soon after being discharged.
Hope this helps to some degree but please feel free to ask additional questions, if needed. Thanks!