How to handle toddlers waking up at 4:30 AM

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

1. 1
   Bedtime adjustment
2. 2
   Using ok-to-wake clocks
3. 3
   Adjusting food intake before bed
4. 4
   Potty breaks before bed
5. 5
   Eliminating daytime naps
6. 6
   Modifying physical activity levels
7. 7
   Removing lightbulbs
8. 8
   Offering positive rewards
9. 9
   Reiterating sleep expectations
10. 10
    Using a training clock with lights to signal when it is time to stay in bed or play quietly in their room
11. 11
    Baby-proofing and gating off the child's bedroom or playroom for independent morning play
12. 12
    Setting out safe activities, books, or toys the night before for independent morning entertainment
13. 13
    Allowing limited access to specific rooms like the upstairs area or bedroom rather than the whole house
14. 14
    teaching children to read a digital clock and stay in their room with toys until a set time
15. 15
    using color-changing clocks to indicate when it is okay to get up
16. 16
    allowing older children to get up, watch TV, or make their own breakfast quietly
17. 17
    installing blackout shades and stuffing cloths into cracks around windows
18. 18
    Ignoring crying and refusing to let the puppy out of the crate until a set time
19. 19
    Taking the puppy out for a quick, all-business bathroom break with no lights on and putting them right back to bed
20. 20
    Giving a bedtime snack
21. 21
    Stopping overnight crating to let the puppy sleep on the floor, couch, or bed
22. 22
    Using frozen lick mats or kongs to buy extra time before breakfast
23. 23
    Trying to be quiet in a separate part of the house

In their words

Unedited, most upvoted first, each linked to the thread it came from.