Offer toasted oat cereal as a snack or try whole grain snack chips. (verywellfamily.com)
I recommend single - grain oat cereal next; it has a very different texture and your baby may like the taste better than rice cereal. (get-your-baby-to-sleep.com)
Most babies will be exposed to gluten when they are introduced to barley or oat cereals between 4 and 7 months of age. (wholesomebabyfood.momtastic.com)