Stage 4. Transitions Sleep (6–8 months)

Keeping nights stable when everything around them is changing.

Six to eight months is one of the busiest developmental windows in the first year.

Weaning has started or is about to. Some babies are beginning to pull up, roll, or move. Separation anxiety is either arriving or about to arrive. Nap transitions are happening. And nights, which may have been relatively settled, are getting complicated again.

If it feels like there is no single cause and therefore no single fix, that is because that is accurate. This stage has multiple simultaneous drivers.

What is actually happening

At this stage your baby's cognitive development is accelerating. They understand object permanence now. They know you exist when you leave the room. They know the cot is not where you are.

Separation anxiety at this stage is not manipulation. It is a cognitive leap. Your baby has just become aware enough to know what they are missing, which makes falling asleep without you feel genuinely alarming to them.

At the same time, the move from three naps to two, or two naps to the beginnings of one, shifts the day dramatically. Overtiredness and undertiredness both affect night sleep. Weaning affects gut comfort, which affects sleep. First foods mean new textures and digestion patterns the baby has never experienced.

There is a lot happening and most of it lands at once.

Why the approach that worked in Stage 3 needs adjusting

The settling techniques that worked when your baby was three months old were built for a baby with different cognitive awareness. A baby at seven months knows far more. They also feel far more.

Controlled crying approaches that some families try at this stage frequently fail not because the method is wrong in principle but because this specific developmental moment, peak separation anxiety, is one of the worst times to use them. The distress is real and prolonged settling attempts often escalate rather than resolve.

The adjustment needed is not harder. It is steadier. Consistent presence, predictable sequences, and less reactivity to escalation rather than more responsiveness.

What changes nights at this stage

Predictability is the most powerful tool in this window.

A consistent bedtime sequence that your baby can anticipate reduces the anxiety of the transition into sleep. When they can predict what comes next, the arousal response is lower. Lower arousal means faster settling.

Managing the nap transition carefully so they arrive at bedtime appropriately tired, not overtired, not underdone, has an outsized effect on how nights go.

If separation anxiety is driving night waking, a brief and predictable check-in response rather than an extended settling attempt often works better. You are reassuring the alarm rather than trying to override it.

What to do tonight

Run your bedtime sequence the same way, in the same order, every night. Say the same things. Handle in the same way. Let the predictability do the work.

If they wake in the night with separation anxiety, go in briefly. Say the same short phrase. Do not lift unless they are truly distressed. Leave before they are fully asleep if you can. Come back in sixty seconds if needed.

Do not change the plan after one difficult night. One night tells you nothing. Four nights tells you a great deal.

Not sure if you are in Stage 4?

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