Going back to work in 2 weeks

I'm a teacher and go back to work in 2 weeks. Currently my son nursed 4-5 times in a 24hr period. He'll be just a few days shy of 10 months when I start. I'm debating to pump or not to pump at work. With my first i stopped pumping during the day around 11 months because he had dropped down to 2 feedings a day. What is everyone else doing? I have no problem pumping during my lunch break. Just don't want to be doing something I don't need to if I'm good to cut out nursing during the afternoon and just keep the morning and night feedings.