Yeah my brains been gone for too long

This isn't about your brain's ability
This is about self-discipline

I'm the other way now I used to hate reading, now i will read a 500 page book in a day and scorch my eyes doing it.

I read like 4 full sized novels a month (more or less. Depending on my free time)

depends on the types of books you're reading.
you can't compare college chemistry textbook with cheesy romance about how a girl falling for a vampire. it doesnt match.

Speak for yourself thotiana. I used to reach 60-100 novels a year. Now I dont read at all, but I still listen to audiobooks and consume training material.
.
You don't have to stop educating yourself just because you leave school. I'm at the top of my game and only getting better