Stuck in the 150s for two months

Hey gang, I've been stuck in the high 150s for the past two months, and I am taking the test in November. I am really struggling with the higher difficulty qs on LR. I know the newer tests are getting harder, and I feel like I don't know what Im doing. Every single section, preptest, everything I do is 159. I want to get to 170s like everybody else on this forum but I am really close to just giving up atp.

My RC is fine. My foundations are fine. I blind reviewed a previous test and got a 174. But I just don't know what to do, how to improve. I haven't been reviewing my answers as deeply as I had in the past, but I'm just really scared that I can't get to where I want to be.