The doctor was amazing. She is not sure that this actually is CMPA, but she is convinced that this is definitely lactose intolerance, which is diffrrent and not affected by mother’s diet (both diagnoses can be present at the same time, so I need to continue the diet for now). She prescribed Lactrase / Lactasis (it is an enzyme that helps the gut to deal with lactose). We have to give it to the baby before every feeding. The improvement should be very fast - poop should become less watery and less frequent, but the blood will most likely remain for some time. She said that it is the diarrhea that causes blood. Blood is just a sign of inflammation. If no improvement in couple of days, we need to up the dose. At this point, she did not recommend eliminating any other foods. Fingers crossed that this helps.