Yes it is a challenge. And you didn’t even mention missing class on yom tov, or tests on chol hamoed.
These issues will most likely follow you into your working life too, unless you can work exclusively in a frum environment that revolves around the frum calendar. Ok, not the tests on Friday issue, but deadlines right before or after shabbos/yom tov, working late Fri afternoons. Short Fridays are always hectic. I hope you figure out how to “juggle” now, it will be a great skill to have all of your life. Hatzlacha!