Bluebird When you say 'latest' update, what version were you on previously and what version are you updating to?
If previously on Android 12 then the move to 13 can take upwards of 30 minutes as the compiling is done at boot instead of during the normal delta update 'finalizing update' section of the process when using the device as it is a major OS upgrade.
It would be unusual to see it last so long though and you haven't provided a timescale you have been waiting.
I would advise plugging the device in and leaving it as long as you can then report back. Forcing a restart will revert you as that is expected behavior to protect/save your device if there was an issue with the update.