Is anyone taking Zenpep rather than Creon? If so what foods work?

I do not have diarrhea, but I have many bowel movements as my digestive system doesn't seem to get the nutrients needed. I go uup and down about 4 pounds every day, but am stuck not moving ahead. I don't have diabetes, but do not eat sugar, salt or sodium. I eat about 1,500 to 1,600+ calories a day, but they all go down the toilet. I'm working with Mayo on this, but so far nothing seems to work. I take 40,000 unitswith my three meals and 10,000 units with each snack. I need to gain 13 pounds and don't know how to regulate the water intake as well. Anyone who has any information would be greatly appreciated! I'm 6 months from surgery and they got it all. I have no cancer. Thank you for reading this!