Personally, annoying alarms will wake me up for a second, but my brain is so reliably offline at those times that I turn alarms off. I once woke up to a blaring siren from the restaurant across the street and woke up enough to close the window groggily – when actually, I should have called the police because someone had broken in! My prefrontal cortex (the adult human being of the brain) is just not active. It’s like the decision-making and responsible me is strapped in the backseat, while an irrational preschooler is sitting in the driver’s seat.
Is that your problem, too? You wake up for a second, but go back to sleep before you’re alert enough to make sensible choices?
For that problem, I’ve found that it helps to make the morning as appealing and comfortable as possible. For example, I had an important appointment today. My alarm woke me up, and I saw that I had put a juice box on my nightstand and a cereal box and my laptop close to the bed. I then remembered that my plan was to eat cereal, drink juice, and watch a fun show in bed to wake up. Literally a preschooler’s idea of a good morning!
By the time I’ve had twenty minutes of that, I’m alert enough to actually get up (I put my phone with the second alarm across the room to make that happen).
When I can, I also pay attention to my sleep cycles as waking up between them is much easier than in the middle of one. Here’s a page that calculates the ideal wake-up times for you: https://startsleeping.org/sleep-calculator.