- reduce or eliminate fluids intake 1 hour before bedtime. Increase fluids intake during the day.
- make peeing just before bedtime a routine
- wear non stay-dry diapers at bedtime. My 2-year old boy uses modern cloth diapers. When he wets himself at night, he'd fuss and ask me to change him, then go back to sleep. Sometimes, he uses the potty at night too.
- teach child that pee pee goes into the toilet / potty, including sleeping time. My boy with sensitive skin knows that if he sleeps in wet diapers for long hours, he might get rashes. So I always remind him "pee pee in diapers, get rashes. So pee pee in toilet." After some time, he started waking me up to change him or bring him to potty at night. Sometimes, he stays dry until morning.
For potty-training a younger child, read 18 Sure-Fire Tips for Early Potty Training Success | Mummy's Reviews
Night-time potty-training can take quite long, so be patient.