How to set wake up sleep schedule alarm for today after alarm already went off once

Greetings, bb9248.

Welcome to the Apple Support Communities. We can understand why you’d want to know how to change your seep alarm for the entire week, rather than just one day. 

Learn how to change the entire schedule, here: 

“Add or change a sleep schedule

1. Tap Browse at the bottom right, then tap Sleep.
2. Scroll down to Your Schedule, then tap Full Schedule & Options.
3. Do one of the following:

• • Add a sleep schedule: Tap Add Another Schedule.
  • Change a sleep schedule: Tap Edit for the schedule you want to change.

1. Do any of the following:

• • Set the days for your schedule: Tap a day at the top of the screen to add or remove it from your schedule. The schedule applies only to days shown with solid-color circles.
  • Adjust your bedtime and wake up schedule: Drag  to change your bedtime,  to change your wake up time, or the semicircle between the icons to shift both times simultaneously.
• Set the alarm options: Turn Wake Up Alarm on or off.
• When Wake Up Alarm is turned on, you can choose a sound, its volume, a vibration, and the snooze option.
  • Note: You can’t select a song for a sleep schedule alarm. However, you can select a song for an alarm with the Clock app .

1. When you’re finished, tap Add or Done.
2. When you tap Done, the changes apply to every day in the schedule.” Add or change sleep schedules in Health on iPhone

We hope this helps! Thanks for being a part of the community.

Sincerely.