I just wanted to post this in case you weren't aware that iPadOS 13.3 was released yesterday, December 10, 2019.
I downloaded/installed it late last night without issue!
I downloaded/installed it late last night without issue!
No issues so far. My first attempt to install met with failure though. It downloaded and did the "preparing" thing and then would just stop and revert to a "download now" thing. Jumped out of settings and got an official warning about an error downloading. Closed Settings, rebooted, and it worked fine. Don't know if I hit it during a peak download time maybe though. Was around 6pm PST last night.