I couldn’t imagine being as transactional as @ThisOldThang describes, or in fact even being able to stay in bed with a SENd child in the house.
My stepson is a horrendously early riser, on the rare occasion he does sleep through he wakes up between 3:30-4:30 currently. On the worst nights, that’s after 5/6 wake ups.
He is of course more attached to my partner, his dad, and when he wakes it’s him he wants - I wake up anyway, and when he gets up, we all get up. I can make breakfast, or much needed coffees, while my partner starts getting things sorted or dealing with the first meltdown of the day.
I know some people swap, take it in turns, but it would always be my partners turn because that’s who the kid wants, so we work as a team and I do the household stuff while he tends to his son.
It’s difficult, but it’s not rocket science.