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.
When I have trouble concentrating on what I’m reading be it for work, education, or pleasure, as long as I’m in a space that allows for it, I’ll read aloud. It’s surprising how much more enjoyable/bearable this makes it.
Also, if fiction, you can practice your acting skills during character dialogue, which can be fun/mildly embarrassing.