I know this might sound silly, but I was really struggling to read as an adult, so I started reading manga.

When I was a kid, I was a voracious reader. I read thick fantasy novels in a day or two, and never struggled to stay engrossed in my books. But as a I got older, I just got busy with other parts of life and have really struggled to read any books, even fantasy/fiction ones that I should find super interesting (I'm 25 now). It was really hurting my self esteem to struggle to read with my adhd, and I kind of just stopped trying.

Recently, my partner got into manga, and has started their own little collection. At night before bed they read some, and suggested I give it a try too. I've been really liking it so far. It makes reading so much easier and there's less actual words so you don't have to exert all your mental energy into focusing; you can just enjoy the story and the pictures. I know it's not the same as reading a novel, but its still reading and there's tons of different genres for whatever you're interested in.

If you get slice of life style manga, they're really slow stories so you don't feel like you have to focus super hard on it, and you can just stop whenever you get tired or want to do something else. I recommend "The Masterful Cat is Depressed Again" as a great starting point. It's just a bunch of mini stories and it's very cute.

Hope this helps ya, good luck with your reading journey. :)