Hi Panther_UK,
Thanks for contacting Apple Support Communities!
It sounds like you'd like to add additional sleep schedules to your Apple Watch to track all sleep.
This is a great resource which will show you how to add additional sleep schedules to your Apple Watch: Track your sleep with Apple Watch
Change or add a sleep schedule
1. Open the Sleep app
on your Apple Watch.
2. Tap Full Schedule, then do one of the following:
• Change a sleep schedule: Tap the current schedule.
• Add a sleep schedule: Tap Add Schedule.
• Change your sleep goal: Tap Sleep Goal, then set the amount of time you want to sleep.
• Change Wind Down time: Tap Wind Down, then set the amount of time you want the Sleep Focus to be active before bedtime.
The Sleep Focus turns off the watch display and turns on Do Not Disturb to reduce distractions before your scheduled bedtime.
3. Do any of the following:
• Set the days for your schedule: Tap your schedule, then tap the area below Active On. Choose days, then tap Done.
• Adjust your wake time and bedtime: Tap Wake Up or Bedtime, turn the Digital Crown to set a new time, then tap
.
• Set the alarm options: Turn Alarm off or on and tap Sound & Haptics to choose an alarm sound.
• Remove or cancel a sleep schedule: Tap Delete Schedule (at the bottom of the screen) to remove an existing schedule, or tap Cancel (at the top of the screen) to cancel creating a new one.
We hope this helps.
Cheers!