DS will be 8 weeks old on Sunday and I started pumping to get ready to go back to work about 2 weeks ago. I get between 8 and 10 oz each time I pump (only pumping 1x/day right now). I've been freezing it in whatever amount I get- so I have some bags with 8, 8.5, 9, etc oz. right now he eats 4 oz when we give him a bottle. Should I freeze it in 4 oz portions? Not sure what will be easier when he starts daycare in a month. How do you portion your breastmilk?