Somewhere between the twelve-week scan and the nursery coming together, a quieter worry tends to creep in: what is this going to do to my firstborn? If you’re pregnant with your second (or third) and already thinking about how to prepare your toddler for a new sibling, that instinct — to protect their sense of belonging before anything even changes — is exactly the right one to follow.
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Start With Connection, Not Preparation Talks
It’s tempting to reach straight for the practical stuff — the books, the “you’re going to be a big sister” conversations, the countdown calendar. Those all have their place, but the single biggest predictor of how smoothly a toddler moves through this transition isn’t how much they were told. It’s how secure their connection to you feels going in. A child who feels solidly seen and loved before the baby arrives has a much deeper well to draw on once your attention genuinely has to split.
What Actually Helps Before the New Baby Arrives
- Keep routines steady — save big changes like moving to a new bed, starting daycare, or potty training for well before or well after the birth, not right around it.
- Involve them in gentle, real ways — choosing a soft toy for the baby, feeling kicks, helping set up a small “baby’s things” spot. Involvement builds ownership, not just awareness.
- Name the change honestly — “Babies need a lot of help at first, and some days I’ll have less time. I’ll always come back to you.” Simple, true, and reassuring.
- Read books about becoming a sibling together — and let your toddler ask the same questions over and over. Repetition is how they process something this big.
- Protect one-on-one time now, and plan for pockets of it after — a walk, a bath, ten minutes of full attention. It matters more than perfect timing or the perfect script.
If you’d like a clearer picture of how ready your own nervous system is for this season — because your calm becomes the steadiest thing your toddler leans on — our free Nervous System Quiz takes three minutes and gives you a personalised starting point.
What Not to Do To Prepare Your Toddler For a New Sibling
- Don’t stack transitions — moving rooms, starting big-kid school, and a new sibling all landing within weeks of each other overwhelms even a well-prepared toddler.
- Don’t lean on “you’re a big kid now” — it can quietly tell a toddler their own needs matter less now, which often backfires into more regression, not less.
- Don’t expect excitement to be constant — ambivalence, disinterest, or even mild dread from your toddler is completely normal, right alongside genuine excitement.
This Is Just the Beginning, Not the Whole Job
Preparation helps enormously, but it isn’t a guarantee your toddler won’t struggle once the baby’s actually here — that’s a completely different, completely normal part of the story, and it isn’t a sign that your preparation failed. Think of what you do now as laying a foundation, not building the whole house before the baby even arrives.
If you’d like support that carries all the way through — from preparing your toddler now to navigating whatever comes up in the months after — that’s exactly what The Joyful Parenting Project holds space for. Start with the Nervous System Quiz if you’re not sure where to begin, or reach out any time to talk about your family.
