N.T.
Everyone has their ways and some think it is horrible to do so but it isn't. I gave my babies oatmeal or rice cereal in their bottles when they were about a month old. Just maybe a teaspoon with all that formula as it wasn't thick at all. It helped them sleep because some babies just need more than just breast milk or formula. At 3 months I let mine eat the cereal thicker plus I would let them eat mashed potatoes even. They were fine and are grown with children of their own. My mother did it with me as well. You need to be careful that it is not to thick they can't eat it or drink it and watch them. Every doctor is different also. Some will flat tell you no and others will tell you there is nothing wrong with it. Good Luck. Forgot to mention. Don't give them barley cereal as they can develop allergies. Just rice or oatmeal.