Baby food early

Donna • First time mom of a beautiful baby boy married to a handsome mechanic just turned 21!
I know Dr's says to wait until baby is between 4 and 6 months to start baby food but my son is 7 weeks and has been on cereal since week 2 because of acid reflux so he has out grown his tounge thrust and is holding his head up and sitting up well with assistance. Everything says when baby does all three they are ready for baby food. What do you mommies think?