Comment by prisenco

I've also had to "relearn" how to read after a decade of attention-span-killing apps.

The method I used worked well but it's slow at first. Read a paragraph then stop and have a conversation with yourself about what just happened. If that's still too hard, do it every sentence and build up.

Eventually move on to every page and eventually every chapter.

Think of it like weightlifting: You were a an olympic lifter but you had an accident that left you immobile for years or even decades. Now you're getting back to it. Don't get down on yourself for not deadlifting like an olympian right away. Start with light weights and focus on form.