Girls, hello everyone. Help with advice ?? how to return to the regime…

Girls, hello everyone. Help with advice ?? how to return to the regime? I myself don't understand how it was broken. We've been at it for three months. The baby has started falling asleep after 12 o'clock and wakes up completely around 10 am. On one hand, it's great that there is no early awakening, but falling asleep closer to midnight is terrible ?