How to pump breast milk and store them?

Hi mama! - freshly expressed breastmilk is good for 4 hours at room temperature, up to 4 days in the fridge and up to 6 months in the freezer. If it is frozen and thawed, then it should be consumed within 2 hours if you thawed to room temperature, and within 1 day if you thaw in the fridge. You can search up "breast milk storage rules"! - for storage, it is completely dependent on how you're setting up your schedule. No significant difference whether you store after every pump or end of day, just make sure that if you are accumulating breastmilk in a bottle that the first pump in that bottle is within the last 4 days. - storing in the fridge is for if you are accumulating to put into storage bags one shot or if you are planning to feed to baby soon. Freezer if you are creating an emergency stash / using for other purposes like milk bath in the future. - yes breastmilk will be solid when taken out of freezer. You can transfer frozen milk (solid) into the fridge one day before so that it's thawed, then transfer the cold milk (liquid) into a bottle and pop it into the bottle warmer within the next 24 hours for consumption (once it's warm need to consume within 2 hours). - dismantle all the parts of your breast pump, then just use a brush (either a silicone one or bottle brush from Dr browns / Philips Avent / Hegen) and gentle soap (I use Bzu Bzu if you need recommendations) to wash everything and then put all parts into the steriliser! If you look up your brand's manual, there should also be instructions on which parts need to / can be sterilised. - I personally sterilise after every use for hygienic reasons, but there are people who use the fridge hack where they put their unwashed pumps into a ziplock bag into fridge then just take out for next use and sterilise at least once a day (minimum). Note that this is for full term babies though! If your baby was born premature or with other medical conditions, consult your doctors! Typically it would mean you need to sterilise everything after every use as their immune system is a little more undeveloped. Hope this makes things clearer for you!!