Baby's poop

Hi mommies, yung baby ko since newborn till 1 year old S26 HA cia, then ng Promil gold kami after nia mg 1 year old, (she's 19 months already) pero pansin ko yung poop nia is laging mushy na color yellow or green sobrang bihira n magbuo cia parang thrice ko lang nkita na ngbuo yung poop nia. And 3 beses na rin ciang nglbm. Never naman ciang ngvomit. Possible ba na dahil sa gatas nia? And possible din bang lactose intolerant cia? PS. Nabanggit ko na sa pedia nia to and she advice me na to minimize ung pag inom ng milk ni baby like twice a day lang which is ndi ko naman kayang gawin