I just went back to work last Monday. My daughter was three months yesterday. I am pumping three times a day but only producing 8-9 ounces. She takes 3-4 4 ounce bottles of BM at daycare (depending on how long she's there). My freezer supply is mostly gone so I've started sending formula to daycare (which I'm OK with). Just curious if anyone else is doing this. If she takes 2 4 ounce bottles of BM, how much formula should she get? I'm hoping as I get used to pumping at work, I will be able to pump enough but in the meantime, I will have to do formula.