I discovered my daughter's dairy allergy when she was a few months old. I cut dairy from my diet when I was breastfeeding. She improved, but still had tummy pains, eczema, and other issues. As a toddler, I tried keeping a food diary, eliminating gluten for a week, and I couldn't figure it out. I had her tested for allergies: iGg and iGe responses. She has trouble with dairy, wheat/gluten, and egg whites. As I looked on the internet for new recipes, I have found that they often go together. Maybe your child has more than one allergy? Also, it took 6 weeks of very strictly staying off of gluten before she no longer said on a daily basis that her tummy hurt. Gluten can hurt your insides, and it takes time to heal. I also had her take the ALCAT test, and we had a VERY long list of foods that we needed to avoid for awhile. After a year of following the rules for these foods, we can basically do fine with them. But I was told that she cannot have the dairy, gluten, or eggs. Not sure if any of this helps, but I know it was a long process and lots of research on my own. We also make bone broth, take theraputic grade probiotics and fermented cod liver oil, and soak grains before cooking them.