As I noticed, after reading 2-8 thousand words a day, after a few days of reading like this, it becomes very difficult for me to read, and I started reading actively lately, before that I only watched TV shows and movies, and now I have a slight headache, the text is floating, I even confuse words. In fact, that’s why I used to read very little, and now I’m so tired of TV shows and movies that I’m willing to force myself to read, even if I have a headache, to become emotionally attached to books instead of just consuming like zombie like I used to.
Try a different medium or visit a doctor maybe?
That sounds like 20 minutes or less of reading but the Internet is telling me that for slower readers that’s up to an hour for 8k words. If it takes you an hour, maybe don’t go for quite as long in a sitting and work up to it a little, if it’s 15 to 25 mins of reading I think I would switch to something more paper-like / talk to an eye doctor about it.