That would be great to breastfeed for a month b4 exclusicely pumping. One thing that concerns me is with only pumping, you have to pump alot, like s s many times your baby feeds a day. & your milk comes in by supply & demand. So maybe, pump during the day, but breastfeed at night. Your supply goes up at night. I've breastfed all my kids. Tried the pumping thing, its very vigorous but u have to do it to go to school/work.