I'm just starting to give my 6.5 month old some food. He hasn't really eaten much yet, just tastes of bananas and apples. Within the next couple weeks, I'm thinking about letting him try a grain (I'm going to make it w/EBM). I don't want to give white rice, so I was wondering which would be easier on his belly: whole-grain oatmeal or whole-grain brown rice? I'd love to hear your thoughts!