Yes, T-A-G has been doing that himself!
Actually, he found that filling in details for really minor characters for X-Ray led him to sections he’d nearly forgotten about, so there was quite a bit of random acts of rereading going on.
Of course the problem with that, is then he finds still more errors. In particular horrible misspellings of lesser characters that show up a few times, but aren’t famous enough to remember proper spelling all the time.
Correcting errors is a fraught proposition because there are two mainline versions Dead Tree and Kindle and both and both are formatted quite differently and if not done properly the book gets hung up and doesn’t show up properly. So you basically have to fix them twice per book.
Of course, if you fix them too much then they get out of sync with the audio…