I am waiting to get into a specialist on Feb 14th to try to see if we can diagnose my LO properly with a MPI/MSPI or allergy. We have had suspcions based on many symptoms and the pedi wanted us to try soy or Alimentum. He absolutely will not take the Alimentum. I have posted about this already and have tried all tips. He even went on a hunger strike and was refusing to eat even his old formula, so that was scary. I don't want to keep forcing this on him and end up in the ER. The pedi said we could try soy to see if that helps. She said lots of babies with a milk protein intolerance/allergy also have a reaction to soy but some do not. I have read things about not giving boys soy formula. Does anyone have experience with soy formula? I would love to hear experiences. I just would like my little guy to feel better soon! Thanks!