Well I give up, as a shift worker this is horrible as a full body metric tracking device.
I recently made the switch to garmin because of the great reviews, it is an amazing watch to use while running my multi day ultra runs, thriatlons, etc. (yes you can do that while you are a shift worker unlike some people say)
But the problem about the sleep schedule and tracking is horrible.
At first I put the schedule like a "normal" person and it was from 23:00 -> 09:00, sleep was tracking fine, but then I had a couple of unplanned night shifts, no sleep recorded and my watch goes to this sleep focus mode automaticly, turn it off, after a couple of minutes back into sleep focus..
Ok well, change schedule then, this is very burdonsome, I work very irregular hours meaning I have to fine tune this every day..
Browsing around the internet for a fix for this I found out that in previous watches you could just set you sleep schedule from 0:00 -> 0:01 and it worked fine.
Tried it, but then there is no more sleep recorded, making every training metric the watch has unusable, body battery not updating properly, no training readiness scores.
Also weird thing, you go to bed at around 23:00, put the watch into sleep focus mode, then because the schedule ends, your watch takes itself out of sleep focus mode... so I woke up at around 3:00 and I saw that the screen was bright again.. had to put it back into sleep focus mode.
For shift workers this design is just horrible...
Garmin, please can we just get an option to turn of the sleep schedule, and let us manualy enable sleep focus mode when we go to bed and wake up.
For now, I'm planning on reselling this watch because for an 1100 euro watch, it has become just a glorified GPS tracker for me and that is making me upset.