Sentence:  Infrequent stooling in the first month of life is almost always due to insufficient intake of milk. A baby who is voiding but not <WSD>stooling</WSD> or gaining weight may not be receiving enough high fat hindmilk. <WSD>Stooling</WSD> frequency will correct itself with additional feeds or making sure the infant receives more hind milk at a feed. 
Meaning of the word marked with <WSD> tags:  To produce stool: to defecate.