Tips for building endurance for the 4th section?

Hi! Looking for some advice on building endurance for the LSAT, especially for the last section of a PT/test.

I’m taking the September LSAT and lately I’ve been scoring around the mid-160s, but I’ve noticed a pretty consistent pattern where my last section is significantly worse than my earlier sections. For example, on my most recent PT my earlier LR was around -4, but my last LR initially came out to -11 with a -4 on BR.

I’ve noticed the same thing on a couple recent PTs where I feel like my accuracy/decision-making just drops toward the end and primarily in the fourth section.

I work full time, so a lot of my studying is before/after work, and I’m wondering if anyone has dealt with something similar and found a good way to specifically train that 3rd/4th section endurance without just constantly taking full PTs.

Any tips or things that worked for you would be really appreciated :)