Ay, importante talaga yan, mama! Para sigurado ka talaga, best to ask your pedia or lactation consultant, they'll give you the exact guidelines na trusted, kasi it can vary depending sa temperature at storage, eh. From what a few of us moms talk about, formula milk usually needs to be consumed within certain hours once mixed, at ang breast milk naman has different timelines depending kung room temp, fridge, or freezer, but honestly, your doctor can give you the most reliable info para sa baby mo. Safe is always better than sorry, di ba?