The circle thing is still spinning but I think 4-5 hours is too long to be stuck at 0%. I'm afraid if I force shut down, it's going to mess up my files
I've had 1903 in the updates for a long time but I never clicked to download it, it just did it all of a sudden awhile ago
UPDATE
I just woke up and the update screen is hanged, still at 0%. I force shutdown and when it came back, Windows rolled back the changes and I'm back to 1809. I also don't see 1903 in the updates settings for now. Not sure how long that will last though.
Plus I now have to look through if the update left any junk files taking up unnecessary space
UPDATE 2
Nevermind, it went straight back to updating to 1903...
UPDATE 3
I followed this guide and it seemed to have halted the feature upgrade so far. I'll keep an eye out on it to see if it really worked.