This past year I've been reading more again, and in the past four or five months I've had the goal of reading every day. No fixed number of page or chapters, just read. It's also incredibly depended on the book if you can read 100 pages or just 10. But you're right, it becomes easier and it over time becomes your default entertainment, presumably because you brain sees it as the easy choice.

One thing that have made it easier for be though has been the decline of everything else. As someone pointed out, the internet isn't the internet we grew up with, TV shows mostly suck now and are all designed for binge watching which leaves me feeling physically ill. Same with e.g. YouTube, there are still creators who's content I enjoy, but the YouTube algorithm seems to force me out of a tangent and preferably into Shorts. Much of this algorithmicly pushed content makes me feel ill, so I try to steer clear of it.

So now I buy used books, most happens to be published in the 1970s for some reason. There are so many out there that I'll never run out of things to read and at €1-2 per books, it's cheap.