The short answer: yup. :)
My daughter, when she was finally weaning, got down to about once a week, then once every other week. If your supply gets low during the week, you might want to nurse more on weekends (take a breast pump or learn to hand express early in the week, in case of engorgement). Since she's over six months, supplemental solids are a great way to go while she's away from you. Water in a sippy, O cereals, fruits, veggies, tender meats, introduced slowly, of course, can keep her content until you get home.
You might find that nursing when you first get home is a great way for both you and baby to relax. The prolactin release from nursing is a great way to get your head back to home mode from work mode.
As long as there is some nursing going on, you'll keep making milk, especially since most milk is made while the baby is nursing. Another bonus, the fewer times a day a baby nurses, the more concentrated the immunological properties are in milk. So babies that nurse once or twice a day are getting much the same benefit in that regard as babies that nurse 8 times a day. Which could be very helpful if you're going to be around a bunch of "germy kids" all day! (ask me; I have a going-on-fourth grader and a first-grader-to-be, but never had a sick baby during school last year).
You're doing a great job, by the sound of it. Keep it up and good luck in school this fall!