Just heard about this and it makes a lot of sense:
Avoid caffeine 10 hours before bedtime
Stop work and alcohol 3 hours before we
And turn off screens 1 hour before bedtime.
If you do something similar what do you do in the last hour?
I used to have a bath but a) I'm not as keen when it's hot! and b) we are temporarily without a bath.
I read a book for 10-15 mins in bed, take my inhaler, brush my teeth and take out my contact lenses... That's not an hour though!