When I'm trying to teach my kids, I find I'm the one who needs the training.
Our girls are grown; two still live at home and sometimes they don't hear their alarm clocks in the morning. A few months ago I told them I wasn't going to wake them up anymore. They were adults and if they don't wake up to their alarms, then they'll be late to whereever they needed to go. And for a few weeks I didn't wake them. We left them once on a Sunday. Diana ended up driving them after they woke up.
Diana learned the lesson. She has been great lately at waking up with her alarms. She's up, ready and out the door on time. But Beth... well she's still having a little trouble.
Then one time - it was only one time! - I ran downstairs and woke her up. Now I'm back to the usual routine, flipping on her lights, turning on her radio, explaining why she needs to wake up, what she'll get to do once she does wake up ("It's karaoke today!") and I'm right back to hating it. And she's back to sleeping in until I wake her up!
I need to tell her that I'm not going to wake her up anymore. She's an adult and if she doesn't wake up to her alarm.....