Sound familiar?
Waking multiple times when they were only waking once
Bedtime suddenly taking an hour when it used to take ten minutes
Naps that were reliable have become a battle
Someone told you 'it's just a regression' — as if that helps
Googling at 3am and getting seventeen conflicting answers
Wondering if you've somehow permanently broken their sleep
"I was running on broken sleep for months. I felt like a shell of myself. Everything I tried either didn't work or felt completely wrong for my baby. I just needed someone to tell me what was actually causing it."
"You haven't run out of options. You just haven't found the right cause yet."
End the Cycle — Get Your Guide →What's Inside
Read tonight. Implement immediately.
The 5-minute regression identifier
Five regressions. Five different drivers. Identify yours by age and symptom pattern before reading anything else. The 4-month regression needs a different response than the 18-month regression. Starting with the right one matters.
Why this is happening — the two-minute explanation
What's actually going on in your baby's brain and development during each regression window. No jargon. No lengthy neuroscience lecture. Just enough to make everything else make sense.
Phase 1: Survive
What to do during the acute phase — the first one to two weeks when everything feels like it's falling apart. Feed more if you need to. Co-sleep if you need to. This section tells you what's safe to do temporarily and what's not worth doing at all.
Phase 2: Recover
How to rebuild sleep after the acute phase passes. The specific sequence — environment first, routine second, gradual support reduction third. Why the order matters and what happens if you skip steps.
The 4-month regression special section
This regression is different from all the others. The underlying sleep change is permanent. This section explains why 'waiting it out' only partially works — and what to do instead.
Regression or something else?
A quick checklist for ruling out illness, teething, developmental leaps, and schedule issues that mimic regression symptoms. Because not every sudden sleep disruption is a regression — and the fix is different if it isn't.
The Quick Reference Card
Every regression, its driver, typical duration, and the two-phase response — condensed onto one page. Stick it on the fridge. Refer to it at 3am without having to find the guide.
Is This Guide Right for You?
This guide is designed for you if...
- Sleep was going reasonably well and has suddenly and significantly worsened
- Your baby is between 4 months and 2 years old
- You've been told 'it's just a regression' but nobody told you what to actually do about it
- You won't do cry-it-out — or tried it during a regression and made things worse
- You're breastfeeding and worried that feeding more during the regression will create permanent habits
- You want to understand what's happening, not just be told to wait
This is NOT a good fit if...
- Babies under 4 months — sleep is naturally irregular at this stage regardless
- Situations where sleep has always been difficult and there was no clear period of improvement first
- Anyone who needs medical advice — always check with your paediatrician if you have concerns
No tears, no guilt. Breastfeeding and co-sleeping families always included.
Frequently Asked
Still have a question? Email us at hello@calmbabynight.online
Real Results
Kate L.
Mum of Felix, 5 months
"We were blindsided by the 4-month regression. This guide explained why it's permanent and what to actually do about it. That one distinction changed everything for us."
Tom N.
Dad of Amara, 8 months
"Night 3 was as bad as the guide said it would be. But because I knew it was coming, we held through. By night 6 she was back to waking once. The guide was right."
Rachel A.
Mum of Ezra, 18 months
"The 18-month regression hit us like a truck. The autonomy section — offering choices instead of instructions — worked from the very first night. Genuinely shocked."