Why Won’t My Newborn Sleep in the Bassinet?

Why Newborns Struggle with Bassinet Sleep

🫶 They Want to Be Held

Your baby may cry in the bassinet simply because they feel safer being close to you. Holding provides warmth, movement, and security everything they’re biologically wired to seek out in those early weeks.

💤 Moro Reflex (Startle Reflex)

Newborns often flail their arms or legs in their sleep, which can wake them abruptly. This is due to the Moro reflex, a normal but disruptive movement that can make it harder for them to stay asleep unless they’re swaddled or being held.

🌡️ Discomfort in the Sleep Environment

If the room is too bright, noisy, or warm or if your baby is hungry, gassy, or needs a nappy change they’re more likely to resist settling in the bassinet.

🔄 Reflux or Gas

Lying flat can be uncomfortable for babies with reflux. If your baby hasn’t been burped properly, or they’re gassy, they might fuss or resist sleep when placed in their bassinet.

⏰ Wake Window Issues

Putting your baby down too early (before they’re tired) or too late (when they’re overtired) can make it harder for them to settle. Understanding your baby’s age-appropriate wake windows can make a big difference.

📏 Outgrowing the Bassinet

If your baby is getting longer or heavier, the bassinet might simply be too small. Check the weight and height limits on your model. Many babies transition to a cot or crib around 4–6 months.

Tips to Help Your Newborn Sleep in the Bassinet

Every baby is different, but these gentle strategies can help:

🍼 Create a Comfortable Sleep Space

• Keep the room cool (20–22°C) and use blackout curtains for naps and night sleep
• Use a white noise machine to mimic womb sounds and block out household noise
• Ensure your baby is well-fed, burped, and in a fresh nappy before putting them down

🤱 Make It Smell Like You

Try sleeping with your baby’s bassinet sheet for a few nights so it carries your scent. This can be calming for your baby and help them feel more secure.

🤱 Swaddle for Security

For newborns who aren’t rolling yet, swaddling can prevent startle reflex and help them feel safe and snug. Transition to a sleep sack when rolling begins.

💤 Follow Sleep Cues

Look for signs of tiredness (yawning, fussiness, staring off) and try to place your baby in the bassinet drowsy but awake so they learn to fall asleep there.

⏳ Be Patient and Keep Trying

If your baby cries when placed in the bassinet, comfort them but try again the next sleep time. With consistency and calm, most babies get the hang of it.

What If My Baby Is Older Than 4 Months and Still Won’t Sleep in the Bassinet?

By 4 months, most babies are ready to transition to a cot or crib and may be developmentally ready for sleep training.

Sleep training teaches babies to fall asleep independently and helps them stay asleep longer. It’s safe to start from 4 months (and over 5.5kg or 12 lbs), but always check with your paediatrician first.

Not sure which sleep training method is right for you? My sleep support packages offer personalised guidance tailored to your baby’s age and temperament.

Why It’s Important for Babies to Sleep in a Bassinet

While contact naps during the day are fine for newborns, co-sleeping at night is not safe. The bassinet is designed to be a safe sleep space, reducing the risk of suffocation or SIDS.

Room-sharing with your baby (having their bassinet or cot in your room) is recommended for at least the first 6 months. It makes night feeds easier, and helps your baby feel reassured by your presence.

How Long Should a Newborn Sleep in a Bassinet?

Most bassinets are suitable for babies up to around 4–6 months of age, depending on their size and development.

📏 Check your bassinet’s weight and height limits
When your baby is too long or starts to roll, it’s time to transition to a crib.

Not sure how to transition from bassinet to cot? I cover this in detail in my infant sleep guides.

Bassinet Sleep Safety Tips

• Always place your baby on their back to sleep
• Use a firm mattress with a fitted sheet no soft bedding or toys
• Keep the bassinet away from windows, cords, and heaters
• Avoid sleeping on the couch or in bed with your baby, even for naps

Final Thoughts

If your newborn won’t sleep in their bassinet, remember you’re not doing anything wrong. Babies need time to adjust to life outside the womb. With the right sleep environment, support, and consistency, your baby can learn to sleep comfortably and safely in their bassinet.

If you’re unsure where to start, I invite you to explore my sleep support packages. I also offer comprehensive sleep guides covering newborns through to toddlers so you have everything you need for a restful night.

Not sure which option is right for you? Book a free 15-minute call with me, and we’ll find the best fit for your family’s sleep needs.

I’m here to help please don’t hesitate to reach out!