My son is a little more than 2 years old. He is fully potty trained as long as we take him to the potty. This means every hour we sit him on the potty and pees and tries to poop. He has less than two accidents a day. He is not nighttime or nap trained (though at home he never pees during nap only at preschool).

We are ready for the next step. How do we get him to tell us he needs to go. Usually he tells us when he goes but never before. Any types or tricks?