Inconsistent LR Scores

Heyaaaaaa

So for the past couple of PTs I took, I always did well on the first LR section (avg -2) and got a couple more wrong on the second LR section (avg -4 to even -6). I noticed that on the second LR I get even some of the easiest questions wrong. This doesn't happen when I take a long break between my first LR and second LR. Also, I tried taking the second LR first and the first LR later, and the same thing happened. I scored better on the first LR section I took, even though it was technically the second LR section. I'm assuming this is because I get worn out and lose concentration. Any advice on how to fix this?

P.S. My LR BR score is about -2 in total.