Stuck at 160!

Looking for tips on how to break out of my plateau. On my last 4 PTs, my first 3 scores have been 160 and my most recent was 161. I work a full-time job, and I have been studying for 1.5 hours in the morning every day before I start because I know my brain will work better before work than after work. In June, my score on the real deal was 159. I am taking August in a few days, and I am also signed up for September. Although it would be amazing to get 180, my goal at the moment is to simply just improve in general, even if only by a few points. If anyone can share how they broke out of this pattern, I'd appreciate it!

I have tried the method of predicting answers before I read the choices. Maybe I could be reviewing differently?