Well, your math is higher than mine without dyslexia, if that makes you feel any better. I’m a NMS, and what really propped me up was the Writing and Reading. You seem to be strong in Reading, make sure to study that to pull that score up even more - it’s easier to get better at something you’re already pretty good at.
There are some study guides out there for the new PSAT - such as this: http://www.rakuten.com/prod/barron-s-strategies-and-practice-for-the-new-psat-nmsqt/278368833.html?listingId=-1&sclid=pla_google_rakuten.com&adid=29963&gclid=CO_O7J7RusYCFQUGaQodRYgOig
Invest in at least one of them if you can.