J.L.
I pumped at work with both kids. I would suggest getting the best pump you can and one that expresses both breasts at once really helps. I have heard some insurance will pay for the pump, but mine didn't. The whole process of pumping and cleaning the equipment after took me some time so I only pumped twice a day - 10:30 and 3:00 (probably 20 minutes with getting ready and clean up). I also tried to pump before I went back to work to have a stash in the freezer and pumped at night and on the weekends after I went back. Eventually, I couldn't keep up with the kids and we supplemented with formula. Both kids were fine switching between breastmilk and formula. It took some of the pressure off of me and I was able to breastfeed for over a year with both. Good luck!