Ah girl, ang concern mo ay valid talaga! Best approach is to ask your pedia kung paano exactly mag-transition kasi ang scoops at measurements ng dalawang formula ay different talaga, hindi pwedeng pareho lang gamitin. A few of us moms tried the gradual mixing method din, and honestly, mas smooth ang process pag may clear guide from the doctor kung gaano kalaki ang increment per week. Better safe than sorry na lang sa feeding, lalo na at 1 year old na siya ngayon.