When your baby is not eating enough, the stools may be more greenish. If the baby is not eating enough, the baby has relatively more bile, which will set off the stools to be more greenish at this time, and may also have more mucus. Therefore, if you find that your baby is underfed, the stools will be green or predominantly green. How to observe whether the baby is full or not? When the baby is full, he will have a better sense of satisfaction, the number and amount of stools and urine are normal, and all aspects of growth and development are within the normal range. At this point, you can basically judge that the baby has eaten enough, feeding is appropriate.