This works, but the quicker method for me was to hold the book over my head, out of my line of sight while I focused my eyes on something a little farther away (5’ away is fine). Then you can simply move the book downward into your field of vision while refusing to let your eyes refocus. It should be blurry, because you’re still focusing past it, despite it being right in front of your face. Then just relax and let your brain do the work.

This method got by far the quickest and most reliable results for me, most pop suddenly into view in just a couple seconds.

I think this method works best because you’re using established muscle memory to focus your eyes on an object at a measurable, consistent distance, and then just not letting them change. Removes several variables from the equation.