The whole purpose of fasting it to give the digestive system a rest. If you do any solid food you're not fasting period, and certainly much less eating any kind of dairy on ANY kind of "fast" or "cleanse" .
Flax seeds or oil with cottage cheese is a whole other protocol by Dr. Budwig and it is something you do as a suplement and not any kind of fasting and/or cleansing protocol so you certainly did not read it on this forum.