Tell me how to gently wake up earlier. We've shifted to the fact that the…

Tell me how to gently wake up earlier. We've shifted to the fact that the baby wakes up at 11-11:30 am and falls asleep at 2-3 am. I think we fall asleep late because we get up late too ? We used to go to bed at 9:30 am and wake up at 7 am, went for an hour walk and then slept a bit more. Now it's a nightmare with sleep. Has anyone consulted with sleep consultants?