Pwede naman po, kung gagamitin din naman in a day or two. Pero kung istore nyo po sya ng medyo matagal, much better if you'll use milk storage bags po.
May if using bottles dapat may sealing discs po. And may tendency po na magbreak sa freezer ang bottles
Baby bottles tend to be break when stored for a long time. So yes you need to have a storage bag.
▪︎HOW TO STORE BREAST MILK https://youtu.be/SVZiDwQvPlU