Hey Junker,
I also had to take it twice to pass. And I also used Lumosity (those raindrops amirite) plus other apps for mental maths, as well as some gaming cuz they told me I was low on spatial stuff. You’re doing all the work to keep sharp — now all you need is strategy for relaxing when you’re there. I brought luxury stuff for the hotel room / anything to relax the night before, and I ensured to really “reset” every time I walked out of the test sections. You’ve already done it, so you know what to expect. Being accurate is better than being fast, so relax and concentrate. Then rinse & repeat. You got this.
TLDR, remember to relax.