Pumping at work

I’m currently working 7-11 hour shifts when when the baby is here and I go back to work I’m hoping to move down to 6 so I can continue to work on my schooling as well.

How often would I need to pump? Like once or twice? We have no private areas expect bathrooms.. I’m just trying to figure out what I’d need to do. I’m hoping to be back at work 6-8 weeks after birth!

Also good breast pumps that’s portable?