Milk storage Question

Li

Ugh I feel so dumb for waiting to pump a stash 🙃 I start work in 2 weeks and I’m trying to build up a stash. I’m pumping and most of the time I’m only gettin 2-3 ounces all together. I don’t want to waste a whole bag for only a few ounces so I was questioning wether it’s safe to refrigerate my 2-3 ounces and wait till I get enough ounces of pumped milk all together then mix all of the refrigerated pumped milk into bags... if that makes sense?

Do i just have to make sure that pumped milk is the same temperature before mixing together ?

Oh and I’ve seen some people who lay their breast milk in the freezer but I prop mine up. Does they matter ? 👀