Teacher/Coach and Pumping

I am about to return to work after Christmas break. I have already returned to coaching, but have only had to go to a few practices and 2 games so far. I am seeing pretty quickly that pumping is not going to be easy. Home games are a little easier to schedule with especially since I can either go to my classroom, our coaches office, or a single toilet bathroom that locks to pump in. However with all of the pre game prep and and 2 games back to back it is going to be difficult. Away games I don't see literally any opportunity to pump as soon as we hit the road. This is my situation today and of course I forgot my pump at home. 🤦🏼‍♀️

Any advice from teachers who are also coaches? Or even just teachers? I'm worried about my supply. I'm already going to have to pump extra for awhile because of my mistake today if leaving my pump at home! Having male coaches around doesn't help either.