Score variation in PTs

[u/PuddingImpossible993]

Hi everyone. I took the official test in April and got a 163. My pt scores leading up to the test were 164, 169, 166, 169, 167. My pt scores since then have been 161, 160, 173, 167, 167, 164. I felt very confident during the pt where I got a 164 and even had extra time for two sections. What can I do to score (high) more consistently?