Is Bonna milk good for infants?

Been using S26 Gold for my baby since newborn sya but nung mag wa-1month na sya is biglang d na sya nag poop everyday which is not usual kase everyday sya nag poop ehh.. Now that she's turning 2months S26 parin sya but inii'spit nya lng yung milk every after drinking SO WE ARE PLANNING TO SWITCH TO BONNA 0-6MONTHS.. OKAY PO BA ANG BONNA AND MAIWASAN BA ANG PAG SPIT NYA NG MILK?? Thank you. First time Mom here...