Toddler dosent sleep

It is impossible to get my 3 year old boy to sleep. Hes up most nights anywhere from 12 am to 2 am and still awake by 730 am. His bedtime routine has always been the same, a bath teeth brushing lotion pjs bed. He dosent get anything sugary during the day and all we allow him to drink is water. Idk what to do i just want one good night of sleep. Any tips? Anybody else have this issue?