iBooks freezes after IPAD OS 13 update

Hello ! Have you tried to Restart the iPad ? or Re-install the built in App ?

To restart the iPad, https://support.apple.com/en-us/HT201559

To Re-download the Apps, https://support.apple.com/en-us/HT201272

Don't worry, I will help you as hard as i could.

You could try to re-installing the Apps by Holding the Apps until the Apps Shaking > Press the "X" button.

After that, go to the App Store > Search for "Books" or "Apple Books" > Install.

If you worry about the purchased Books, please refer to this Apple Support. Go to Redownload books or audio books sections > Follow the step without worrying to pay second time.

Redownload apps, music, movies, TV shows, and books - Apple Support

I have this problem too. The bigger problems for me are blank pages in the purchased books and my progress not saving when I reopen a book the next day etc. I found a work around online saying to go to any menu page any tap any of the bottom icons (like the library icon) ten times in quick succession. This resolves the issue but usually for a few minutes. Then the blank pages are back. I really don’t want to reinstall if I don’t have to. I que got a ton of docs and books in there. Ideas?

ugh I just read the rest of the thread. I guess I’ll back up my docs and give it a shot.

No worries ! My pleasure to help you !