I have not tried cereal yet. I am trying to breastfeed exclusively for the first six months. That being said, I went on a date with my husband last night and had some wine so was feeding my daughter pumpped milk when we got home. She took 8.5 ounces of milk in the two hours before bed. I'm not sure how long MY body will be able to keep up with that and may have to supplement a little at bedtime.