I think your study is higher priority than the work. There are much more gold in your MBA degree in the next 18 month than your day-to-day job. The MBA may make you to be a CEO, that could make your earning up to million dollars, or like a heart doctor.
Think about how many people are paying 50k tuitions for full time, and living expenses for MBA degree. You are luck that you are making money while study. The top university MBA that you are taking is worth a lots. Doing good study to learn some real capability is much more important than your present work. So do not misplace your priority.
(section removed, because I don’t want to get fired)
Save your energy for your study.
Little does my dad know that I’ve been doing very little “good study”, but I know that his advice is always golden.