I wouldn't use entrainment during PhotoReading or activation.

Brainwaves change according to which brainwaves you need for the book , for the activation layer.

Enter the Accelerated learning state before PhotoReading, use the tangerine technique for all the steps and the brain will swing to the right brainwave. It's an amazing muscle. What stops it from functioning at it's best? Doubt, thinking you need something else before it can work (brain loves instructions like that) being dehydrated.

Alex