Pumping at work questions

So I’m a nurse. When I go back to work after maternity leave my LO will be three months old. I will be going back to 10 hour shifts 7am-5:30pm. I have a 45 minute drive to work. How often do you pump at work?

My boss will not be thrilled to give me time away to pump as I see a patient an hour at a doctors office but she will have to get over it.

Also I’ll be pumping in our “clean utility” closet where we keep our stock because there is nowhere else to pump.

Any help/thoughts are appreciated 😀