My wife and I completely differ in how we wake. I am more, “oh, I am awake. Let’s get up and do stuff.” She is more, “not yet!”
Fleur mostly takes after her mother in that initial wakefulness. After about half an hour she is more like me. The shift is sudden. One minute she is the world is ending, crying, grouchy, complaining about everything. The next she is fine.
This best of both worlds situation amuses me in hindsight.
She occasionally woke between 4 and 6 am, would come try and sleep with us, but after half an hour just be up. I would get up with her. I try to get her to eat something and go back to sleep.
Ideally she went back to sleep after a little bit. Too often she crashed just before wake up time.
Basically, that means I am up for the rest of the day.