Once reading has been interrupted, it takes time to re-focus, so maybe we should take some advice from an old rock band:

TIME NECESSARY TO REFOCUS AFTER INTERRUPTIONS

• 23 Minutes:  Mark, Gloria, The Cost of Interrupted Work

https://www.ics.uci.edu/~gmark/chi08-mark.pdf

• 15 Minutes:  Vasicek, Brent (2011). Squirrel! Distractions in the Classroom

https://www.scholastic.com/teachers/blog-posts/brent-vasicek/squirrel-distractions-classroom/

• 8 Minutes:  Newport, Cal (2016). Deep Work: Rules for Focused Success in a Distracted World.

• 5 Minutes:  Goetzke, Katheryn (2011). 5 Minute Refocus Per Interruption?

https://blogs.psychcentral.com/adhd/2011/02/5-minute-refocus-per-interruption-tips-for-adhders-to-make-focusing-easier/.