Formula

I went to my pediatrician beginning of the month and she asked me what formula I’m feeding my 2month old and I said soy based. She told me babies can’t have soy milk, but when me and my two older brothers were babies, my mom gave it to us. When I give my little man ‘Similac Sensitive’ formula, it hurts his tummy. He starts crying and pushing and I tried Similac Total Comfort and Similac Pro-Advanced.

He doesn’t grunt, push, cry or anything with the soy so idk. I’m at a confusion here.