Hi, I'm Jazz Kostov  

Midwife. Maternal Child Health Nurse. Infant & Child Sleep Consultant in Melbourne. 

I’m the one sleep-deprived parents turn to when they want to have well rested, happy children and reclaim their evenings (dinner in peace, anyone?)


Working in your home in Melbourne and the Mornington Peninsula or online, I support families with sleep and settling from birth to five years old


I bring the hands-on experience, knowledge and heart-filled wisdom you need to reclaim your family’s sleep. Using responsive strategies that suit your child and life, I’m here to give you the tools – and sleep – you crave.   


If you’re an A-type like me, you’ll be assured to know I have over a decade of nursing and midwifery experience, topped off with a Bachelor of Nursing, a Postgraduate Diploma in Midwifery and a Postgraduate Diploma in Nursing (Child, Family and Community). 



I've been through sleep anxiety too.

When my daughter Hazel was three months old, I felt trapped by anxiety around what might happen with her sleep. I was catastrophising her sleep – despite all the knowhow and tools I have as an Infant and Child Sleep Consultant. Thankfully my anxiety passed after a few months with the help of a post-natal psychologist.

So I totally empathise with your worries, fears and self doubt. Night after night of broken (or zero) sleep – and the trauma of daytime naps that just don’t go to plan – can really mess with your mind.

Meet the team.

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Resident Nutritionist | Let's Sleep

Thea Doyle

Hi there, I’m Thea, I’m a Wife, Mother & Nutritionist currently living on the Sunshine Coast with my beautiful son Darcy and husband Sam. 

I believe I was put on this earth to inspire and educate people on how to make real food choices that positively impact their overall health and empower them to become the best version of themselves.


I know first hand how overwhelming it can be when it comes to feeding little humans. Even as a qualified nutritionist and foodie, I admit I felt overwhelmed at the beginning of our solids journey.

Find out more about me here.

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Cass Ponton


I am a Melbourne based podcast launch and manager, helping ambitious, driven and impactful women get their voices heard. 

I'm helping Jazz from Let's Sleep get into the charts with her new series 'Let's Parent' and assisting with the weekly production of the show. 

I'm a lover of travel, self development books that take over my bedside table and vegan donuts. 

You'll find me daydreaming about adventures with a soy latte in hand. 


Come and say hi over at The Eco Assistant or check out my website, here

Podcast Guru | Let's Parent

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Sleep is life-changing.

It’s the one topic every mum and dad can weigh in on when it comes to parenthood. 


And you know what? It’s totally normal to struggle with your baby’s sleep. Even if you’re a second, third or fourth-time parent. You’re doing your best. There is no right or wrong; it’s all part of the journey and getting to know that beautiful little person blooming before your eyes.  

My sleep philosophy is about giving you confidence around sleep and settling, replacing the guesswork with proven, practical tools

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Want to know what lights me up?

Apart from vegan tom yum soup, lazy beach days and exploring local wineries with my hubby and Hazel…


The HUGE transformation that families experience during and after sleep support with me. It changes your world to have a bub who can sleep anywhere, re-settle independently and wake later in the morning after a full night’s sleep. 


I get such a thrill seeing your confidence grow so you can have off-routine days, take trips and fit in the things you love to do while navigating your baby’s sleep needs. After all, that is what life is about.


Let’s get you some sleep. 

"I wanted to say a big thank you to Jazz for her program and her patience working with me (an overwhelmed mum who let her son call all the shots!).


In just 10 days she has changed our lives! Shaan is going to sleep on his own happy and waking up happy and as parents we have our evenings back to reconnect as a couple.


Overall our family is so much happier with life! thank you so much again! I would recommend Jazz in a heart beat!"

Mum, Ashna

The let's sleep package