my boy age is 40 days. he always do yellow colour poty. but today his poty colour is greenish yellow. is it called green poty. is it for inadequate feeding. because last 4-5 days he sleep and sleep while feeding. starting month he do cluster feeding. now this habit changes. feeding time became less. so is the poty colour for inadequate feeding. please advise. sorry but I attached a picture of his poop. don't mind