I'd say do whatever helps reduce your anxiety going into the test. For me this meant doing nothing related to the LSAT in the week before the test. This might be different for you.
I plan on retaking and my situation is remarkably similar to yours: 172 PT average, then scored a 168 in April and a 169 in June. (I should note I did no additional prep between these tests, and I guess it shows; I was hoping I would get lucky, lol.…