
How do you know when your child is ready for toilet training?
It might be time for toilet training if your child:

A healthy adult needs between 7-9 hours sleep per night, with babies, young children and teens needing even more to enable their growth and development. (Sleep Foundation)
Normally, the amount of urine created at night opposed to daytime decreases, so most people can sleep the whole 6-8 hours without the need to get up and go to the toilet. (2 - US Library of Medicine).