The best thing you can do to increase supply is nurse and/or pump more often. In the beginning you won't get much since your supply has regulated but if you continue to stimulate the breast with more pumping or nursing then eventually your body will establish more supply to keep up with demand. However, I'd caution against trying to really increase your supply just so you can build a stash. You don't want to end up with mastitis or oversupply. It can also be really exhausting!!
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