There’s a particular kind of hope parents carry into baby number two: maybe this time we’ll be more prepared. And you will be, in lots of ways. But your older child is stepping into brand-new territory, and for them, “a new baby” can feel like a mix of curiosity, excitement… and “Wait, what do you mean you’re busy?”
Preparing siblings for a new baby isn’t about getting your child to perform joy on cue. It’s about helping them feel safe, important, and involved, while gently teaching them what newborn life actually looks like. Below are practical tips that work in real homes, plus books you can read together to open up the big conversations in a small, manageable way.
When should you tell your child a baby is coming?
There’s no perfect script, but timing can help. Parenting resource Raising Children Network suggests it can help to introduce the idea around 3–4 months before baby arrives, so your child has time to absorb the news and ask questions.
A few age-based cues:
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Toddlers (1–2 years): Keep it simple. They don’t “get” time. Use concrete markers like “after your birthday” or “when it gets warm/cold”.
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Preschoolers (3–5 years): Expect bigger questions and bigger feelings. Give short, honest answers and let them come back later for more.
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School-age kids: They often want details and might worry about practical things (who will pick them up, where they’ll sleep, what changes).
Tip: If you’re not feeling great in early pregnancy, it’s okay to explain why you’re more tired or nauseous. Just avoid accidentally making the baby the “reason” everything is hard. A simple: “My body is working hard growing the baby” lands better than “The baby is making me sick.”
Start with the biggest truth: babies are cute and also very needy
A lot of sibling upset comes from one thing: expectations not matching reality.
Newborns:
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cry (often)
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sleep (often, and unpredictably)
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feed (constantly)
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don’t play back
This doesn’t mean your older child won’t love them. It just means they need help understanding what “being a sibling” looks like in the early months. Raising Children Network recommends reading stories about babies and talking through what your family will be like when it grows by one more tiny person Raising Children Network.
If you can, spend time with a friend’s newborn. It’s the most effective “demo” there is.
Practical steps that actually helps
Here are the strategies that tend to make the biggest difference once the baby arrives.
1) Involve them early, but keep the “helper” role light
Kids love belonging. They do not love pressure.
Offer choices like:
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“Should we pack the baby’s going-home outfit or nappies first?”
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“Do you like this book for the baby’s shelf?”
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“Help me choose a special toy for the pram.”
HCF notes that involving children in preparations, like choosing items for the nursery, can help them feel more connected and less anxious.
2) Do the big transitions either early or later
If you can avoid stacking changes right on top of “new baby”, you’ll likely have a smoother run.
Common ones to plan around:
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moving to a big bed
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toilet training
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starting daycare/kindy
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dropping the dummy
The Australian Breastfeeding Association also suggests thinking through household space and routine changes ahead of time, and either making them well before baby arrives or delaying until things settle Australian Breastfeeding Association.
3) Build a tiny daily “you and me” ritual
This is the secret sauce. Not a grand outing. Just a small, reliable moment your older child can count on.
Ideas:
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10 minutes of “special play” after dinner
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a bedtime book that’s only theirs
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a short walk while baby’s in the pram
It’s not about the activity. It’s the message: “You still have me.”
4) Practise “gentle hands” and baby boundaries before baby exists
You can rehearse the rules with a doll or teddy:
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How to pat gently
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where babies like being touched (feet are usually safe; faces not so much)
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handwashing before cuddles
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“We don’t put toys in a baby’s sleep space”
This becomes especially handy once baby arrives and everyone is tired.
Books to read together (and what each one is good for)
The best sibling books do one of two things:
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Give your child language for feelings
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Explain newborn life in a relatable way
Here are a few that work well, including ones commonly used by Aussie families and parenting sources:
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There’s a House Inside My Mummy (Giles Andreae)
Great for younger kids. Warm, simple, reassuring. Mentioned by HCF as a family favourite. -
There’s an Ouch in My Pouch (Jeanne Willis)
Helpful for talking about independence and sibling dynamics. Also mentioned by HCF. -
Any “big brother/big sister” concept books
Straightforward books that label what’s coming can be very grounding. Raising Children Network also recommends stories about babies as a simple way in Raising Children Network.
How to use books effectively:
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Read them before your child is upset, not only after.
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Pause and ask: “How do you think they feel?”
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Let your child disagree with the story. That’s still processing.
What to do when the baby arrives (so the first meeting doesn’t feel like a takeover)
The first introduction sets the emotional tone. A few grounded ideas that come up repeatedly in family advice:
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Hug your older child first.
This helps them feel secure before they have to “share” you. -
Keep your hands free.
If possible, have the baby on a blanket or in a bassinet so you can cuddle your older child easily. -
Consider a small “from baby” gift.
It doesn’t need to be big. It’s symbolic: “I’m joining your family, not stealing it.”
The Australian Breastfeeding Association also mentions that some families like a small welcoming ritual, and that it can help for mum to come in without the baby first for that big reconnecting hug Australian Breastfeeding Association.
Sibling feelings after birth: what’s normal (and what you can do)
Even with perfect prep, you might see:
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clinginess
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tantrums
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baby-talk/regression
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sleep disruptions
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“I don’t like the baby” statements
None of this means you’ve failed. It means your child is adapting.
HCF notes that jealousy and sibling rivalry often show up as attention-seeking behaviours, and recommends open, non-judgemental conversations and small amounts of daily one-on-one time, even if it’s only 15 minutes HCF.
A helpful phrase bank:
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“Two things can be true: you can love the baby and also miss me.”
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“It’s hard when I’m feeding the baby. I’m still here with you.”
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“You’re allowed to feel upset. You’re not in trouble for feelings.”
Where the Sleep Sack fits in the sibling transition
One of the most underrated parts of preparing siblings is protecting the family rhythm after the baby arrives. When newborn sleep is unpredictable (because newborns), the goal isn't "perfect sleep" but creating small conditions that support calmer nights for everyone.
A simple, consistent bedtime routine for the baby can help you carve out a little more space for your older child too. That might look like feed, cuddle, into sleep space, then you get five minutes to read with your big kid. If your older child is still a toddler themselves, having a predictable wind-down routine for both kids—even if they're staggered—can be the difference between chaos and something resembling calm.
If you're setting up that newborn sleep space, the Newborn Swaddle Sack is a great option for a safe, consistent bedtime routine. But here’s a pro-tip for the "big" sibling: consider a matching set.
You can even involve your older child in the routine in a low-pressure way: "Can you help me choose the sleep sack tonight?" Small moments like that help siblings feel included and special. A familiar, matching sleep ritual signals safety to your toddler, even when everything else in the house feels a bit topsy-turvy.
(And yes, sometimes they'll say no to helping. That's also normal.)
A simple sibling-prep checklist (save this for later)
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Tell them with enough time to process (often around 3–4 months out) Raising Children Network
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Read 2–3 sibling books on repeat
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Avoid stacking big life changes close to birth if possible, Australian Breastfeeding Association
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Build a daily "me and you" ritual now
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Practise baby boundaries with a doll/teddy
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Plan the first meeting: hug the older child first, hands free if possible
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The "Team" Factor: Consider matching sleep sacks to help the toddler feel connected to the baby
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Expect big feelings and a bit of regression
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Keep reassurance steady and specific, not just "You're fine"
The bottom line
Preparing siblings for a new baby is less about crafting a flawless “big sibling” moment and more about building emotional safety, one small habit at a time: honest talk, steady routines, books that open conversations, and little rituals that remind your child they still matter enormously.
