when? I'm not trying to start a debate but I'm sure it will. When are doctors recommending to start…

when?

I'm not trying to start a debate but I'm sure it will. When are doctors recommending to start cereal for babies now? Just curious because I'm still feeding my 4 month old every 2 hours during the day 6 oz. And yes I will talk to the doctor about it we have a check-up on Monday. But if I call and ask a question they always want me to come in.??