Hi there! I experienced this pretty recently as well, so I hope it helps to know you are not alone in facing this (it really ruined my mood that day haha). This may sound counterintuitive but sometimes stepping away from the test is SO necessary, I can't emphasize this enough. Yes, it may feel like time wasted because you aren't studying. But trust me when I say that all of my plateaus and periods of consistently making seemingly silly mistakes were overcome by not thinking about the test! I know taking prolonged breaks isn't feasible for everyone, but even a day or two off will only benefit you when you come back with a fresh mind.

bruh

I'm in the same boat currently, ran into this problem two months ago as well. Seconding another comment, my best advice is to take a break. I completely understand that it feels like time wasted with the test coming around the corner, but it truly helps to give your brain some time to absorb the information you are studying before improving. Engage in some physical activity, watch netflix, see your friends, do whatever will help to take your mind off the test for a few days and return to the test with a fresher mind.

this genuinely ruined my entire week