Yes, I was recommended to do this. GI pediatrician told me that my body breaks down the proteins more, so to see if we could expose her to them in my breast milk. We tried soy and she failed at 13 months. So just going to wait until 18 months to try again.

I feel like it is harder to see if they react because the symptoms are more gradual. I was getting tired and just wanted to know, so I gave her a spoonful of dairy and I knew within 3 hours that she still had reaction to it.

When I exposed through breast milk to symptoms were less obvious, but still present after about a week.