Nak, this is actually a safety question, so please check with your pediatrician or lactation consultant, mas safe na marinig from them directly kung paano handling ng expressed milk sa inyo. Generally speaking though, a few of us moms have asked the same thing! The timing and storage methods really matter para ma-ensure na safe pa rin for baby. Your OB or PD will give you the best guidance based on how you're storing it (room temp, cooler, fridge). Better safe than sorry with breastmilk, diba?