Burnt out but don't want to quit

I'm a first year engineering PhD student at an R1 school. My program isn't in the field I got my BS in so it's been a rough year so far playing catch up and learning things I didn't learn as an undergrad. The experiment they had me start on hasn't been working very well and it's been about 8 months of what feels like being stuck. I am very exhausted but I don't want to quit! My university isn't giving us a spring break and at the moment I'm just dragging my feet to finish the semester. I feel like I just need a break, not a full stop. My advisor has told me before if I needed to take some time off research I could for the sake of mental health but I also don't want that to be "used against me". Anyone have any advice?