I'm returning to work tomorrow (wah!!!) and put together D's first cooler full of expressed milk to take to daycare. I will be pumping now 4-5 times per day, and will probably pump enough milk to almost cover the amount he'll need every day. Should I freeze what I'm pumping and take the daycare stash from my older frozen stuff, or just use the already frozen stash to supplement whatever I pump during the day? I'm so confused!!