The baby refusing his food is not unusual. Just continue on giving the baby milk formula since it is important in his feeding. The baby can take maximum of 32 ounces a day. Then offer single-ingredient foods with no sugar or salt and wait three to five days between each food. In this way if the baby has a reaction you will know why. After some days, you can give the baby combination of Important nutrients, cereals, vegetables and fruits if he reached 8 months. If babies still reject food, do not force it. Try again in a week. If the problem continues, tell the doctor to make sure that there is no problem.