Another way to try and retrain your brain, that can be done whenever, is to set a 5 minute timer and go lay in your bed. Don’t even close your eyes, just lay there. Then, when the alarm sounds, get up and continue your day. The purpose is to connect the sound of the alarm to the act of getting out of bed.
You have to opt-out. I got an email from meta with a link to the form. Doesn’t seem to matter really what you write. It got approved in less than a minute for me. I think they purposfully made it look like it’s more work than it’s worth.