I have been trying to take a PT every other day and on my days off, I try to do timed sections/drill question types. I plan to not do anything the day prior to my test though, because I don't want to feel tired from studying on test day.
J.Y. says in one of his explanation videos that often on the LSAT, you have to trade time for that feeling of 100% confidence. Maybe others can share different experiences, but on harder LR questions, I have mostly found what J.Y. says to be true.