A not tiny font size can help. Supposedly dark themes help, but I’ve never found this true myself. Honestly, I don’t think there’s any real accommodation needed

A not tiny font size can help. Supposedly dark themes help, but I’ve never found this true myself. Honestly, I don’t think there’s any real accommodation needed here. As others have mentioned, it’s all about motivation. The longest books I read as a kid were programming books - I got through them because I was motivated to learn. I’d recommend challenging him with puzzles - find something level appropriate such “print a pyramid with base size n” or “draw a maze that doesn’t loop back on itself” for advanced beginners.