1x a day lang mag poop normal lang ba yun?

Hello mga mommies, 1st time mom here. i have a 2 month old baby po and lately napapansin ko na once a day nalang sya mag poop and greenish tan yung poop nya. Formula feed po sya with similac. Normal lang po kaya to? this has been going on not more than 2 weeks po. #Milk #PoopConcern