Hi there. My sister has a beautiful baby boy who will be 4 months old tomorrow. But she isn't sure how to introduce solids into his diet. Or when. The food packages (like fruit mushes and things like that, specially made for babys) say 4 months plus, and so she feels as though she should be feeding him solids. If anyone could give me some information to tell her about how to first introduce solids safely into a 4 month old's diet, I would be appreciative. Thanks for your time.