Early bedtime has benefits for children, and for parents: science says that

A longitudinal study conducted in Australia followed 3,600 children during their first nine years of their lives through questionnaires for their parents every two years. According to the research findings, children who went to bed early (before 8:30 pm, remember that in other countries they end the day before) were not only healthier and happier in general, but their parents also reported better . mental health
Sleep is a fundamental part of our mental health and a good rest is especially important during childhood, when the foundations of future routines are laid. The effects of lack of sleep in childhood or its poor quality have repercussions on both cognitive and physical development.