Gradually reintroduce earlier bedtimes
Work towards getting your pre-teen to bed by 8:30. That gives them 30 minutes to fall asleep and 10 hours to sleep by the time they have to get up at 7 a.m. If they need to get up earlier, they should go to bed earlier as well. For teens, aim for a 9 p.m. bedtime—which means no more late-night TV watching.
Also try to remember that your teen is not just being difficult when they say, “But, Mom, I’m not sleepy!” Starting at puberty, the body’s biological clock shifts by about two hours. So although your 13-year-old may be able to go to bed at 9 p.m. and fall asleep, your 15-year-old probably can’t fall asleep until 11 p.m. Patience is key.