How do you introduce diaper-less during bedtime? My boy is currently 3yo and has been toilet trained for 6 months.

Firstly you must have a waterproof mat to line the bedsheet . Ensure that the child has dry diaper for many nights before attempting to go diaperless. I tried bringing my kids to toilet at night but it doesn't work. So when they are able to hold for many hours at night means there is success in going diaperless at bedtime