How do I tell Bedtime that I am awake? I use iOS Bedtime as my morning alarm to wake up.  Sometimes I wake up before the alarm goes off.  How do I tell Bedtime that I'm awake and that I don't need to be woken that morning?

The only method I've been able to come up with is to go into the alarm set up and turn the Bedtime alarm off.  However, this turns it off not only for today, but permanently for all future days as well, and I have to remember to re-enable it before the next morning.  It's easy to forget, so that's not good.  Is there a better way to do this, while using Bedtime?

If I don't turn the alarm off when I wake up early, then sometimes I go shower, and the alarm starts ringing while I'm in the shower and I don't notice until I'm out of the shower, which isn't good -- it disturbs others.
There's no way to get what you're looking for other than what you're already doing.

Bedtime is made-up of two parts: Bedtime and Wake Up.

These are very easy to use but also very limited.  It's not really designed, unfortunately, for one-off changes to the schedule.

I would recommend looking for a custom Shortcut that you can run to turn off the alarm when you wake up early.  You can try Routine Hub and the Reddit Shortcuts sub.