All about OK-to-wake clocks

An OK-to-wake clock could be the solution you need. This tool can help toddlers understand when it’s time to sleep and wake, encouraging more restful nights and smoother mornings. Let’s discuss everything you need to know in this blog.

Why do toddlers struggle with sleep?

As toddlers grow, they can sometimes undergo a significant shift in their sleep. This change is largely due to their newfound verbal skills, increased mobility, and evolving independence. These developmental milestones often lead to defiance and difficulty staying in bed until they’re fully rested.

One of many common challenges parents face is early morning waking. Toddlers may wake before they’re ready because they lack a clear understanding of when it’s time to get up. Since toddlers thrive on structure and boundaries, providing a clear signal can make all the difference.

What is an OK-to-wake clock?

An OK-to-wake clock is a visual tool designed to help toddlers know when it’s time to sleep and when it’s time to wake. The clock uses colour-coded lights as simple, easy-to-follow cues:

Red light: Sleep time — close your eyes and go back to sleep.

Yellow light: Quiet time — stay in bed and play quietly.

Green light: It's okay to get up and start the day.

This straightforward system empowers toddlers to understand and respect sleep boundaries.

What colours should you use?

I always recommend three colours: red, yellow, and green. If you don’t need a night light, you can simply use just yellow and green — or choose any colour and teach your child what they mean. However, if you’re using it as a night light, I recommend using the colour red because it doesn’t suppress melatonin production and I also recommended dimming it to the lowest setting. Alternatively, you can use just green to signal that it’s time to start the day.

If your child typically wakes earlier than the desired time, you can use a dim yellow to indicate that they should remain in bed and stay quiet. This might even encourage them to fall back asleep.

Benefits of using an OK-to-Wake Clock

Reduces early mornings: By providing a clear signal, the clock helps toddlers understand when it’s too early to start the day.

Teaches time in a simple, fun way: The colour-coded lights make it easy for young children to grasp the concept of time before they can read a clock.

Creates predictable and more peaceful mornings: With clear boundaries set by the clock, mornings become less chaotic, giving families a smoother and more enjoyable start to the day.

When should you introduce an OK-to-wake clock?

There’s no perfect age to start using an OK-to-wake clock. However, it’s best introduced when your toddler can understand what the different colours mean.

Some children may adapt quickly, while others may require consistent reinforcement over a few weeks. Be patient and give your toddler time to adjust.

Tips for introducing an OK-to-wake clock

Explain the colours: Teach your toddler what each light means in simple terms. For example, red is sleep time, yellow is quiet time remaining in bed and green means wake-up.

Let them teach you: Reverse the roles and ask your toddler to explain the colours. If they get it right, celebrate with clapping or cheering. If not, gently correct them and practice again.

Be consistent: Stick to the same schedule every day. If your toddler wakes early, redirect them by saying, “Look, the light is still red. That means it’s still sleep time.”

Celebrate successes: Praise your toddler when they stay in bed until the light turns green. Small rewards like stickers or a high-five can reinforce the habit.

Be patient: Every child is different. While some toddlers may adapt quickly, others may need more time and repetition.

What times to set the clock?

Here’s a realistic schedule I use with my own children:

Red light: 7:40pm to 7:20am

Yellow light: 7:20am to 7:30am

Green light: 7:30am onwards

This routine has been particularly helpful for one of my children, who started waking up before 6am around the age of 2.5. With consistent use of the OK-to-wake clock, she now wakes at 7:20am or later, fully understanding the light signals. It’s important to set realistic times. Avoid setting the wake-up time too late in the morning; aim for a range that aligns with typical toddler wake times. Anything after 6am is considered normal and realistic. If you’d like to encourage later mornings, you can gradually shift the green light by 10 minutes each day as your toddler adjusts.

Alternatively, if your child usually wakes later, you can set the green light for their usual wake time or slightly after, depending on your preference. This tool is also helpful if your child tends to sleep in and you’d like to start their mornings earlier.

Which clock to use?

With so many options available, choosing the right OK-to-wake clock can feel overwhelming. Personally, I use the Nodiee clock, and here’s why:

App-controlled: Easily manage settings like colours, sounds, and schedules directly from your phone.

Variety of colours: Choose from a wide range of colours to suit your preferences.

Dimmable: Adjust the brightness to use it as a night light.

Sound machine functionality: Select continuous sounds that won’t turn off.

Portable: In case of a power outage, the clock keeps running.

Child-proof: The settings remain intact even if little hands try to fiddle with it.

This combination of features makes it incredibly versatile and reliable for both sleep training and maintaining a consistent routine.

Need extra support for your toddler?

If you’re feeling stuck or need personalised help with your toddler’s sleep, I’m here to support you! You can schedule a consultation with me. Alternatively, explore the free resources on my website, including mini-guides and blog posts packed with helpful tips.

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Disclaimer: This blog is for informational purposes only and is not a substitute for professional medical advice. Always consult your healthcare provider for personalised guidance regarding your baby's health and well-being, Babee Dreams does not give medical advice.

Written by Alexandra Selekos I'm the founder of Babee Dreams, a certified sleep consultant and a mum of three. My approach is based on studies, training through The Sleep Consulting Academy, successful outcomes experienced by those who have used my methods and the instincts of a mother. My approach will help your baby achieve their best sleep, whilst always feeling reassured, loved and never neglected.