My 4 month cf/son has been taking Ultrese enzymes since he was 3 weeks old. He is 4 months and 16 lbs., his dietician asked me to go from 1/2 cap per feeding to 1 cap per feeding. I tried and he started throwing up after evry feeding so now we are back to 1/2 cap per feeding. Now he is starting to have oily and ropey stools. Any advice????? I am scared he is not getting enough enzymes.