A new baby changes your older child's whole world.

The child with the least say in the biggest change

A second child is a joy you chose. For your first child, it is an event that happens to them.

Nobody consulted them. One day the house is theirs, and the adults in it are theirs, and the next there is a small, loud newcomer who takes up the lap, the nights, and most of the conversation. From the inside, this is not the arrival of a sibling so much as the quiet loss of a monopoly they didn't know they had.

Understanding it from their point of view changes almost everything about how you respond. What looks like your older child suddenly turning difficult is, far more often, your older child asking a single question in every way they can: do I still have a place here?

Why regression is a question, not a step backward

The most disorienting part for many parents is the regression. A child who was reliably dry starts having accidents. One who slept through the night is up again. Speech gets babyish; the cup gets swapped for a demand for the bottle.

It is tempting to read this as your child going backwards, or as deliberate attention-seeking to be corrected. It is neither. It is a security check. Your older child has noticed that the baby gets carried, fed, soothed and endlessly attended to — and, entirely reasonably, tests whether being babyish is what earns that care now.

The counterintuitive part is that pushing back hardest is what makes it last longest. A child scolded for regressing learns that the ground under them really has shifted. A child whose regression is met calmly — reassured, not shamed — usually gets their answer and quietly returns to where they were. The behaviour is a question. Answered warmly, it stops being asked.

This will not remove every ounce of jealousy, and any programme that promised to would be lying. Some rivalry between siblings is normal, and a little of it even does some good. The aim is narrower and more useful: to keep your older child feeling secure enough that the jealousy stays ordinary.

Why "you're the big one now" tends to backfire

Almost every parent reaches for the big-sibling promotion. You're the big one now. You have to set an example. Look after your little brother. It is meant to flatter, to hand the older child a proud new role.

To a young child, it often lands as the opposite. The message they hear is that more is now expected of them and less is allowed — that the softness and the lap and the being-looked-after have been reassigned to the baby, and their consolation prize is a set of new responsibilities. The promotion reads as a demotion.

The alternative isn't to deny that they're older. It's to stop making their age the thing that costs them. A three-year-old does not want to be a big brother; he wants to still be your child. Keeping that intact — the cuddles, the routines, the small rituals that were his before the baby — does far more than any amount of proud framing.

The one-to-one time that holds it together

If there is a single load-bearing idea in all of this, it is protected one-to-one time.

Not a grand outing. Ten reliable minutes a day that belong entirely to the older child — no baby in the room, no phone, and, as far as possible, led by them. Its power is not in the quantity, which is small, but in the consistency. A child who knows that a piece of every day is still theirs, without fail, stops needing to fight for it through regression or aggression.

Protecting it in the chaos of a newborn week is genuinely hard, and much of the work is practical: when it happens, who holds the baby, how you keep it from being the first thing that gets sacrificed. Small and reliable beats large and occasional, every time.

The full house, and the elder-must-adjust default

There is a particularly Indian layer to all of this, and it deserves naming plainly.

When a baby arrives, the relatives arrive too — often en masse, often for weeks. Their attention pours, almost entirely, onto the newborn. The older child, who a fortnight ago was the centre of every visit, watches a stream of people walk straight past them to reach the baby. And when they protest, the old instinct surfaces: you're older, you have to adjust.

That instinct made sense in a different structure and does real damage here. The elder child is not less in need of reassurance at this moment; they are more. Part of this programme is practical diplomacy — how to give the older child a visible role when guests come, how to gently brief the relatives who matter most, and how to hold a kinder line without turning a happy occasion into a standoff. You will not re-educate an entire extended family in a month. You can protect one child's standing inside it, and that is enough.

When aggression appears

Sometimes the security check turns physical — a pinch, a shove, a hug that is a little too hard. It frightens parents, and it should be taken seriously, but it is rarely what it looks like.

The aggression is almost never real malice toward the baby. It is the older child's fear of being replaced, expressed in the most direct way a small body knows. The response that works holds both things at once: you keep the baby safe and make it unmistakably clear that hurting isn't allowed — and you do it without shame, because shaming a frightened child for being frightened only feeds the fear underneath. Getting that response right, consistently, is a large part of what we work on together.

None of this makes the first months easy. It makes them navigable — with a clear structure for the older child, a calm response for the hard moments, and a household that, before long, settles into being a household of two.