We do not even have control of our own thoughts and emotions so how do we expect to control another human being? The more we try to control and it does not work, the more stress we have. When we let go of the idea that we can control our children, and their sleep, the stress starts to disappear.
The most common cause of early rising is going to bed too late.
It seems counterintuitive, doesn’t it? As parents we often want to push bedtime later and later because our child is waking earlier and earlier. What actually happens by moving bedtime back is that then they are overtired when going to bed. When they are overtired, their body produces Cortisol (which is like a shot of espresso to the system) to keep them up. Going to bed with Cortisol in their system will interfere with the quality of their sleep and will more than likely cause them to wake up too early.