K.B.
Giving cereal to an infant before they are ready can lead to major health problems: constipation up to blacked and perferated bowel. You are taking a great chance. Their stomaches are not able to digest the cereal at this age, only formula and breastmilk which is what leads to the problems. I would highly suggest not giving them cereal anytime before 3 months of age at the earliest. Try increasing the amount of formula or breastmilk they take before they go to bed and throughout the day instead.