Formula... (Top Up)

Ruchi

My baby is just 2 months old and on breast feeding entirely.. we wanted to start formula atlaest once a day so that incase if I am not available baby should not have to stay hungry. So we tried Similac IQ twice and each time we did, baby spitted out the entire thing after almost an hour two later. I think it is not suiting her..what should we do.. please help!!