Medela pumps are expensive but the best. You HAVE to get electric and one that does both breast at the same time. I pumped with my son for 9 months exclusively cause he didn't latch well (I found out later he was tongue tied) I used to pump and feed him at the same time and trust me, you can produce more than enough even just pumping only, but you have to keep doing it consistently. I could get 4 oz from each breast during one session. It would take about 15 min. When I went back to work, I had about 25 4 oz bags frozen. Good luck, you CAN to it!!