If my baby didn't have Stage 1 & 2 Mix-Ins can they start with Stage 3 Mix-Ins if they are old enough?

Yes, they can. As long as your baby is consistently eating solids, Stage 3 Mix-Ins are a great way to frequently feed your baby the top childhood food allergens. If you haven't fed your baby peanut, egg, and milk prior to purchasing Stage 3 Mix-Ins and you would like help introducing those allergens one at a time, you can purchase Stage 1 Mix-Ins.