Glad you asked, I have dyslexia, and I was very worried about writing, much less reading fast enough. In general we budget 4 mins per page, that said the meeting usually starts with a "here's the doc, please read until XXX and let us know if you're ready sooner". And then a "time check how are people doing?" and often you'll hear "I need N more minutes". And back to reading.

I was very worried about this part of the experience because of my challenges, I'm not the world's fastest reader, but over time I got comfortable just saying "I need 5 more minutes". Or I'll say "I'm on page N".

That said we do have some leaders who read incredibly fast, for them I always include some good appendices so they stay "in the room and on topic" rather than float off into their email.