Do T14 schools average/care about other scores? Should I reschedule LSAT?

Hi! I was planning on taking the November LSAT and applying for law schools next cycle. I honestly was thinking of the November one as more of a preliminary/trial run to see how I do. My goal is above a 173 long term, so I was thinking of taking it again in the spring.

BUT my cousin recently told me that some schools, specifically T14 schools, will average out your LSAT scores or at least take them into consideration. I am averaging out at a 164 on practice exams right now. Is this true that they average/care about ALL your scores??? If so, should I just withdraw from November LSAT and/or reschedule for January so I can possibly get a better score the first time around?

Other info: 3.87 GPA from Penn, class of 2023, looking at T14 schools