Honestly, you’re likely to just slog unless you start finding the book or info interesting at least. I can read non-fiction and devour it like fiction, if the content is interesting. A
recent example was Algorithms to Live By. I got my degree in computer science and already knew most of the algorithms mentioned - but the way they explained them was far better than my professors, and they related them to uses in your actual life, not just technical uses. It was a super cool and interesting book to me and I read it super quickly - then again a few weeks later to take notes for fun.
On the flip side, I’ve had more books than I can mention that are just unbearable to read. Not sure if the topic just wasn’t as interesting to me even though I thought it would be, sometimes the writing is just bland, or hundreds of other reasons. Those books I’ll skim to see if it gets better at some point, sometimes it does and just the intro was very background heavy, other times not. If skimming it doesn’t turn anything up or arouse any interest in me, then I just leave it.
The biggest thing is interest though. If it’s a topic or event you know you’re interested in then that makes it far easier to read the book, but even then sometimes the author is just bland or has a writing style you don’t like. In that case, I would recommend finding a similar book by a different author, sometimes reviews will be able to help. If you’re reading for your own pleasure or interests though, don’t be afraid to put down a book that just isn’t speaking to you even if other people call it great.