When to retake exam, August or Sept? Wanted to apply to school this year.

I’m seeking advice on the best time to retake the exam. For context I took the June exam, scored at the lower end of my PT range so I signed up for August + September just to be sure. My recent PTs (in the 140s and 150s) have been averaging above my desired score so I felt pretty good about taking the test in August and just focusing on applications later. However I just took PT155 and totally regressed. Bombed RC, especially the first passage. Confidence tanked.

Now I’m very unsure if I should be taking the August one or practice more and take September while also signing up for October or something. I don’t want to take it too many times and want to make sure I get 175+, while also leaving sufficient time for the rest of law school application (I will only apply with a 175+). I’m also running out of PTs and drill questions, so not sure how to further practice without new materials…