What Happens During the Second Growth Crisis
 Category | Growth crises |
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Medically reviewed by pediatrician Alexandra Zglavosiy
The second growth crisis is a sensory awakening. Around weeks 7–10, your baby begins to see, hear, and sense the world more clearly. They may cry more often, ask for the breast or bottle more frequently, sleep poorly, and need you close. This is due to rapid brain development and new neural connections forming. Gentle touch, responsive feeding, calm surroundings, and sleep routines can all help your baby feel safe during this change.
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Quick takeaways
- The second growth crisis usually occurs around weeks 7–10 and lasts about a week. Timelines may vary—each baby is unique.
- This is a time of sensory awakening: vision sharpens, hearing becomes more precise, movements smoother.
- Babies may cry more, demand the breast or bottle more often, sleep less, and need extra closeness.
- How to help: offer lots of physical contact, feed on demand, reduce stimulation, and simply stay close.
Your baby’s brain is developing rapidly
- New neural connections are forming in your baby's brain, especially in sensory and motor areas.
- What once felt vague now takes shape — faces, sounds, rhythms, and voices.
- Your baby starts to perceive the world more vividly — light, sound, tones, and smells feel stronger.
- This sensory overload can lead to fussiness and fatigue.
What new skills appear after this crisis
- Sensory development — Baby can better distinguish colors, shapes, and sounds. They might be startled by loud noises or overwhelmed.
- Smoother movements — Arm and leg coordination begins. They may intentionally look at their hands and interact with them.
- First signs of dialogue — More sounds, cooing, and emotional responses to faces and voices.
- Strengthened emotional connection — Baby increasingly looks for mom and smiles in response.
Fussiness is expected—and normal
You may notice:
- Crying and restlessness without a clear reason
- Trouble falling asleep and frequent waking
- Increased desire to be held
- Stronger reactions to light, noise, or new stimuli
- Fixation on your face or bright objects
This isn’t regression — it’s the brain learning to process new sensations. Sleep may be disturbed due to all the learning.
Frequent feeding helps with adaptation
- Babies may want to nurse or bottle-feed more.
- This is tied to both energy needs and comfort-seeking.
- Cluster feeding may occur, especially in the evening.
- Appetite increases, feeds become longer.
- Breastfed babies may fuss at the breast—this is normal.
- Milk production will adjust.
Don’t limit feedings — this phase will pass
Sleep may be disrupted again
Even if sleep had improved, it might now become unsettled.
Your baby may:
- Struggle to fall asleep
- Wake more often
- Startle at soft sounds
- Sleep longer during the day and be restless at night
Stick to your routines and offer reassurance
How to support your baby
- 🤱 Stay close: Hold your baby often, use skin-to-skin, slings if helpful.
- 🌙 Create a calm space: Reduce noise, light, and stimulation. Make sleep areas quiet and cozy.
- 🍼 Feed on demand: Breast or bottle — comfort is key.
- 🧶 Use soothing rituals: Rocking, white noise, baths before bed.
- ❤️ Take care of yourself too: Rest when possible, ask for help, eat well. This phase is temporary.
Consult a doctor if you notice
- No feeding for 8+ hours
- Signs of dehydration (dry mouth, few wet diapers)
- Extreme lethargy or drowsiness
- High fever, rash, unusual movements, or piercing cry
Frequently Asked Questions About the Second Growth Spurt
When does the second growth spurt happen?
Usually, the second growth spurt happens around weeks 7–10 of life and lasts about a week, although timing can vary. During this period, your baby begins to notice light, sounds, faces, voices, and smells more clearly. Because of these new impressions, they may tire faster, cry more, sleep worse, and need more closeness.
What new skills appear after the second growth spurt?
After the second growth spurt, babies often distinguish colors, shapes, and sounds better and respond more actively to faces and voices. Arm and leg movements become smoother, and your baby may look at their hands, coo more, and smile in response. These changes reflect sensory, motor, and emotional development.
How can I help my baby during the second growth spurt?
It is best to offer more calm, contact, and predictability. Hold your baby often, use skin-to-skin contact, feed on demand, and do not limit nursing or bottle feeds. Reduce bright lights, loud sounds, and too many impressions. Familiar routines, such as rocking, white noise, and a bedtime bath, can help.
When should I contact a pediatrician during the second growth spurt?
Contact a pediatrician if your baby refuses food for more than 8 hours, becomes very lethargic or unusually sleepy, or shows signs of dehydration, such as a dry mouth and fewer wet diapers. Also seek advice for high fever, rash, unusual movements, piercing crying, or any behavior that strongly worries you.
Is it normal for my baby to be fussier during the second growth spurt?
Yes, during the second growth spurt, extra fussiness, crying, and unsettled sleep can be normal. The brain is learning to process new sensations, including light, sounds, faces, voices, and smells. Your baby may want more holding, breast, or bottle and may tire faster. This phase is usually temporary and lasts about a week.
With care
Our articles are based on evidence-based medicine and reviewed by pediatricians. However, they do not replace a consultation with your doctor. Every child is unique — if you have any concerns, please consult a medical professional.
Sources
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