Sleep schedule for preschool age

My son is almost 4, starting preschool in a few weeks. We have a fairly consistent sleep schedule. But he needs to start waking a bit earlier and be able to wake on time(never had a specific time to wake before).

So I’m curious, what is your schedule for your kids aged 3-6? Also please include if your kid takes a nap. Mine doesn’t anymore. Thanks for any input and advice.