How depressing is it that I’m asking for less hours at work?

The hours they want me to work are entirely inconvenient with the rest of my schedule. They keep trying to schedule me MWF during prime Anthro Society event hours and lab time. And they won’t stay consistent! It’s really frustrating that I have to keep telling everyone my schedule has changed again. It makes me seem flaky and unreliable (which I detest). Just when I think I finally have something solid that I can give to other people they are like, “OH BTW, WE REALLY NEED PEOPLE TO DO THIS SIDE PROJECT 3:30 TO 5. YOU’RE AVAILABLE ON MONDAYS AT THAT TIME? EXCELLENT!” No, just because the physical schedule I gave you two weeks ago says I’m probably available doesn’t mean I’m actually available. Those time slots are reserved for Anthro Society and Anthro Lab, I told you this before. RESERVED: AS IN I’M BUSY.

I have to prioritize and, in the grand scheme of things, anything anthropology related is more important to me. But money is also necessary. What I really need is a job in the department or something more flexible.