Yes it is certainly possible that your baby is a rather greedy feeder as his stools suggest this is possible and his bringing up after every feed.The problem is that his weight is just below the average for his age now and he was above average weight at birth so this does not support that he is overfeeding. His vomiting may be due to reflux and may be quite severe if he vomits so often. It would be best to take your baby to be seen by his paediatrician so that this problem can be sorted out.
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