iPhone 12 Alarm - How to turn off alarm without Home button and without looking at screen?

How do I turn off an alarm on the new iPhone 12 without taking the phone out of my pocket and without snoozing it? I use the alarms when I'm teaching (even remotely!) and I miss the Home button. I need to be able to choose between Snooze and Stop when an alarm goes off, but I'd rather not have to take the phone out of my pocket. Hitting the Volume buttons just seems to snooze the alarm, as on the older phones, but without the Home button I cannot stop the alarm quickly in my pocket. Thanks for the help!