moomsh need advice

1month 11days watery poop nan optepro milk guys need some advice ung baby ko simula nong pinanganak ko xa yan na tlga ung milk nea tapos ok nman poop nea pero days past few days naging watery na xa.. d nman ako nag palit ng milk ano dapat kung gawin? once a day lang xa mag poop.. my same na n tulad ko