Uny has included CEs in the protocol even though both Dr. Schulze and Christopher didn't utilize the CE. However, Dr. Max Gerson had his patients doing several CEs a day, they were a vital part of his protocol and untold numbers of people were cured of incurable diseases.
Uny made a post explaining why she included it in the IP but I can't seem to find it at the moment but if you'll read everything in this post you'll see for yourself just how beneficial CEs are.