Product recommendation: a mini fridge for your room if you live upstairs.
After my c section, it was hard to get up and move around. At nighttime when I'd pump, I placed my bags of milk in the mini fridge and took them to the freezer in the morning before breakfast. Sometimes I like to pre make bottles and leave them in the fridge and then drop them into the bottle warmer before feedings. It is pretty pricey but totally worth avoiding the pain of going up and down the stairs.
The one I purchased is on Amazon and it's portable as well :)
We literally just got one yesterday! Like I don't know why we took so long to get it it's so helpful and I don't have to go 5-7 times downstairs 😂