It’s 2 am, the baby’s finally back down, and you’re lying there running through the day: the potty accident after four dry months. The tantrum over a shirt. The baby talk that’s crept back into a sentence that used to come out perfectly clear – All since the new sibling arrived. And underneath all of it, the question you can’t quite shake — is something wrong with my child, or is this on me? Why are they having a regression?
Take a breath. Neither. This is one of the most common, most predictable, and most misunderstood parts of the new sibling transition — and yes, it’s normal.
Table of Contents
Toddler Regression Is Not a Setback, It’s a Message
When a toddler loses a skill they’d already mastered — staying dry, sleeping through, speaking clearly, playing independently — it can feel like a step backwards. But regression isn’t your child forgetting how to do something. It’s their nervous system redirecting all its resources toward the biggest question in their world right now: am I still safe, still loved, still important, now that someone else is here?
A younger nervous system can only hold so much at once. Faced with a genuinely enormous change to their family, their environment, and your availability, something has to give — and it’s usually the newest, least automatic skills first. That’s not dysfunction. That’s data. Your child is telling you, in the only language available to them, that they need more connection right now, not more correction.
What “Normal” Actually Looks Like After a New Sibling
If you’re seeing any of these in the weeks or months after a new baby arrives, you are firmly within the range of normal:
- Toileting regression — accidents after being reliably dry, or asking for nappies again
- Sleep regression — new night wakings, resisting a bed they’d settled into happily
- Speech regression — baby talk, or wanting a bottle or dummy again
- Increased clinginess — not wanting you out of sight, big reactions to separation
- Bigger, more frequent tantrums — especially around transitions or the baby’s feeding times
None of this means you’re doing something wrong, and it doesn’t mean your child is broken. It means their world just changed more than most adults would cope with gracefully either.
The Timeline Nobody Tells You About
Most families are told to expect a few hard weeks. The truth, from both research and the families I sit with every week, is that this adjustment genuinely takes closer to 12-18 months — not six weeks. (We go deeper on exactly why that six-week number is so misleading in this article on how long family adjustment really takes.) Regression tends to ebb and flow through that year, not disappear in a straight line — easing for a while, then resurfacing around a new milestone, a growth spurt in the baby, or a change in routine.
Knowing that timeline changes everything. It means you’re not failing three months in. You’re exactly on schedule.
If you’d like real support through this exact season — not generic advice, but a coach who knows your specific family — The Joyful Parenting Project is 1:1 coaching built for precisely this transition, with daily support in your pocket for the moments that actually happen at 2 am, the school gate, or the dinner table.
What Helps More Than “Fixing” the Behaviour
- Name what you see, gently — “I notice you want the bottle again. That’s okay. You can have it.” Meeting the need rather than correcting the behaviour tends to resolve it faster.
- Protect small pockets of one-on-one time — even ten uninterrupted minutes a day tells your toddler’s nervous system they still matter just as much.
- Let go of the timeline pressure — re-potty-training too early, or pushing through a regression, usually extends it. Following your child’s pace shortens it.
- Regulate yourself first — your calm is the steadiest thing in their newly unsteady world.
You Know Your Child Best
The families I work with almost always arrive convinced they’re doing something uniquely wrong. They aren’t. Regression is one of the clearest, most universal signs that a child is processing something big — and it responds to connection far more reliably than it responds to consequences.
If you’d like a steady hand through this season — someone who can help you read what your specific child is telling you, and hold you through the moments that feel hardest — that’s exactly what The Joyful Parenting Project was built for. Get in touch and let’s talk about your family.
