What do you do?

I typically put all milk pumped from one session into one pumping bottle and leave it like that for my mom. The reason being she doesn't always drink the same amount at each feeding. In the mornings she'll take from 3-4 oz while in the afternoon it's about 2-3 oz.

I'm thinking of just bringing the breastmilk from each pumping session in a bottle, label the times for day care. Then I also have the RTF bottles to supplement.

What do you do? Do you divvy up formula/bm into feeding portions?