One thing that seems to have helped some of my friends who have experienced the same issue of not wanting to read anymore is to find one particular book or style they liked before and go deep into that author's backlog or similar styles. And to add to that, don't be afraid of reading pulpy fiction; you're not trying to impress anybody with what you're reading, you're doing it for yourself. Enjoy it. Read young adult fiction, read Stephen King and James Patterson, read Beverly Cleary, whatever. As long as you're reading, you're building that bit of your attention span back, and you can move on from there to other things.

I fear there is a big subconscious element to it in "smart people" circles where it almost feels bad to be reading without learning.