You can't go from a hundred to zero the moment your head hits the pillow. Sleep starts an hour or two before bed, with what you do to tell your brain the day is over.
Both Ians are in bed by 10:30. Only one of them is asleep by 11.
Decide the bedtime first. Then start getting ready for it one to two hours ahead.
Four small changes. You don't need all of them.
Nobody does all ten. They're a menu.
Seven to nine hours suits most adults, at about the same times each day. How you get there is personal.
If you snore heavily, stop breathing in your sleep, or are exhausted no matter how long you're in bed, that's a conversation for your doctor, not a wind-down routine.