Hi Mima. Make a plan po na slowly ang transition from BF to FM. minsan po kasi tinatanggihan po ni baby ang biglaang changes. then for FM naman po, slowly mix po the old FM to new FM para masanay po siya sa lasa unti unti. Example Slowly Scoop Transition : 1st day: 5 Similac 2nd day: 4 Similac + 1 Hipp 3rd day: 3 Similac + 2 Hipp 4th day: 2 Similac + 3 Hipp 5th day: 1 Similac + 4 Hipp 6th day: 5 Hipp Sana po makatulong. :)