Achieving Wings is not in many people's future.
While I was going through Pilot training, we were told that only one in eight hundred applicants was successful.
CFAT is only one minor step at the beginning of the whole process. It is the least of your worries.
Aircrew Selection strips out a lot of people that score high enough on CFAT.
The first flying course strips out people that made it past Aircrew Selection, and each successive flying course strips out people that made it through the preceding one.
The hardest that I have ever worked was my first month in Moose Jaw on the Tutor course. That month was all ground school. I studied in the morning during breakfast. I studied during lunch. I studied from the moment that I got home at the end of each day until I went to bed, save a twenty-minute dinner break. On Friday nights I got drunk at the Officers' Mess like everybody else, did all of my personal stuff on Saturday plus some studying, and then studied all day on Sunday.
The following nine months required slightly less effort, but the ability to slack off was minimal.
It takes a lot of work to absorb the amount of absolutely essential knowledge that is being force-fed, even without learning disabilities. A lot. If one cannot keep up, one is not going to pass, and there is no extra time to be found.
If tests are a problem now, they will be a much bigger problem on flying courses. Several written tests on my Tutor course had pass marks of 90%. There are flying tests at the end of every phase on every course. I saw coursemates fail because they had tendencies to freeze under the perceived pressure of flying tests even though they were solid performers during regular training trips.
In practice, every flight is a test of sorts. If you do not understand every aspect of a flight in the briefing room before you walk out, you can expect the trip to be cancelled. It does not take many such cancellations before one is removed from the course. Similarly, failure to achieve the performance levels required during each flight will result in training being ceased pretty quickly.
Yes, you could be one of the 0.125% of Pilot applicants who succeeds. You'll not know until you try. Be prepared for disappointment, however.