If you back up the iPad locally, will it back up Procreate data? I would expect it to...
https://doncorgi.com/blog/procreate-icloud-backup/
I think you can see the last backed-up day (but not list of apps for other devices) somewhere on iCloud.com or in settings on some other iPhone/iPad on their account. Alternatively, you could try restoring to a new/temporary old iPad.
The external monitor + keyboard suggestions in sibling comments could be combined with this advice (or other backup procedures in the article I linked), assuming backup is disabled.
Thank you for pointing that out.