My grandson is 6 and we’ve not had much success getting him trained for even daytime. He would cooperate for a few days and then just get mad if we even mentioned the potty to him. He fully understands what is expected. He has a schedule of the steps at home and at school but usually fails to do anything while sitting on the toilet. He has had a few successes but that hasn’t motivated him. We are beginning something new by putting his regular underwear on in under his pull-ups in hopes that feeling the wetness sooner will give him motivation. Guess we will see. Wish I could be more helpful.