N.P.
Hi,
I would suggest that you do start with yogurt for dairy, than after a week switch to milk. For wheat, I used Cream of Wheat as my first reintroduction. I was able to tell I was having a reaction to it within an hour. I would suggest you read "The False Fat Diet" by Dr. Elson Haas. He doesn't address children's issues specifically, but he does have excellent information on allergies, food reactions and elimination diets or fasting procedures. Best of luck to you.... N.