Share your breast milk bottling/storing methods

Stacy
Breastfeeding and pumping ftm. Please share your ideas on the best ways to pump and store correct portions of breast milk. From feeding to storing to freezing. Can you refrigerate unused milk and then freeze? Can you add fresh milk to stored milk if its room temp? Whats the best way to warm up milk? How much do you typically portion out? Mam makes these anti colic air flow bottles, doesn't water get in the bottle through the bottom as its being ran under the faucet? What is the most efficient way for you to be prepared for having a babysitter for like 7 or 8 hours? How much should i have and can it be parceled out into smaller bottles throughout the day? Should i pump while away? Would you give the babysitter some frozen bags? Whats the best way to defrost a bag and how long should it take(6oz)? Sorry there are so many questions-- please comment with any advise or tips.. or add more questions if you want... 🌸🌺🌻 thank you so much!💖🌟🌈