Reflux & Silent Reflux: Why Your Baby Won't Settle (and What to Do)

Reflux & Silent Reflux: Why Your Baby Won't Settle (and What to Do)

If your baby is unsettled, snack-feeding, arching their back during feeds, and barely sleeping — reflux might be the reason. Reflux and silent reflux are two of the most common (and most misunderstood) causes of infant sleep disruption, and one of the most frequent reasons I hear from exhausted parents in their first weeks and months.

The good news: reflux is manageable, often outgrows itself, and once you understand what's happening physiologically, you can support your baby through it with far less guesswork.

Here's an overview of what reflux is, how to recognise it, and practical tips for managing it.

What Is Reflux?

Reflux is when babies bring milk back up through their mouth or nose — often burning their throat and oesophagus in the process. Adults experience this as heartburn.

It's usually caused by an immature valve (the lower oesophageal sphincter) at the top of the stomach that hasn't fully developed the strength to keep milk down. In some babies, the sphincter is simply loose. Either way, the result is the same: stomach contents flow back up, causing pain and discomfort.

Reflux Symptoms in Babies

• Spitting up and vomiting
• Trouble maintaining or gaining weight
• Chronic hiccups
• Snack feeding (frequent short feeds instead of full feeds)
• Wheezing noise
• Arching back during feeds
• Pain or discomfort when feeding and burping
• Symptoms that worsen when lying down

What Is Silent Reflux?

Silent reflux can be harder to diagnose because there's often very little visible vomiting. The acid still rises into the oesophagus and causes pain — your baby just doesn't bring it all the way up.

This is why it's called "silent" — but it's anything but quiet from your baby's perspective. The symptoms are very similar to reflux, just without the dramatic spit-ups.

Silent Reflux Symptoms in Babies

• Some spitting up and vomiting (but often minimal)
• Pain or discomfort during and after feeds — arching back, stiffening, straightening of arms and legs
• Irritable, fussy, sensitive temperament
• Trouble maintaining or gaining weight
• Excessive crying
• Short periods of sleep
• Symptoms worsen during teething and illness
• Symptoms worsen lying down — content in a seated or upright position

Breastfeeding and Reflux

Certain foods can trigger reflux or colic. If you're breastfeeding, this may relate to what you're eating or drinking. The main culprits tend to be:

• Dairy products
• Soy-based products
• Wheat
• Gassy foods like onions, broccoli, and beans (in some babies)

Feeding a Baby with Reflux

Most babies with reflux will snack feed — short, frequent, frustrated feeds rather than full satisfying ones. Whether on the breast or bottle, they may fuss, pull on and off, arch their back, gag, or try to suck on their fingers at any opportunity.

Drinking milk too quickly or crying can cause air bubbles to get trapped in the stomach, which escalates the severity of the discomfort. Offering a dummy after a feed usually brings comfort to babies with reflux — the sucking eases pain by increasing saliva, which acts as a natural antacid moving down the oesophagus.

How to Minimise Reflux

• Feed upright. Hold your baby in an upright position while feeding so their head is higher than their stomach. Gravity helps the milk move down the oesophagus where it belongs.
• Burp frequently. Burp your baby after every 50–60mls or when you switch breasts. Releasing trapped air reduces the chance of spitting up.
• Follow a Feed → Play → Sleep routine. This builds in upright awake time after feeds, giving the milk time to settle before naps.
• Keep them upright for 15–30 minutes after feeding. Gravity is your friend — it keeps milk in the stomach until digestion begins.
• Offer a dummy. Sucking eases pain by increasing saliva and triggering downward contractions of the oesophagus.
• Ask about mattress elevation. Check with your GP about safely elevating the mattress so your baby isn't fully flat.

"A baby suffering from reflux isn't being difficult — they're in pain."

How Long Does Reflux Last?

Reflux is very common in babies — around 40% of newborns experience reflux or colic symptoms, so you're far from alone. It typically improves on its own over time:

• Peaks: between 2 weeks and 12 weeks of age
• Eases: by 4–6 months
• Fully outgrown: by 12 months for most babies

In most cases, reflux will not harm your baby and does not require treatment. However, if reflux continues to cause pain and problems into toddlerhood, it may be gastro-oesophageal reflux disease (GORD), which can require medical treatment.

When to Seek Medical Advice

If nothing seems to help and your baby is in genuine distress, reflux medication may be the right path. Schedule an appointment with your healthcare provider or paediatrician to find the best solution for your baby.

In some cases, your healthcare provider may suggest Infant Gaviscon or a formula thickener to help neutralise stomach acid. If symptoms persist even with medication, ask about allergy testing — your doctor may refer you to a specialist to investigate whether something else is triggering the symptoms.

Sleep and Reflux

A baby suffering from reflux unfortunately won't sleep well, due to the pain and discomfort. They'll often sleep far better upright — in a baby carrier, on you, or even in their pram. If you do manage to get them down in their own sleep space, it's usually short-lived.

Additional Tips & Natural Remedies

• Avoid car seats for 20–30 minutes after feeds. The seatbelt creates pressure on the stomach and can make reflux symptoms worse.
• Baby massage. This is something you can learn and do at home — there are excellent classes and online tutorials, or your maternal child health nurse can show you the basics.
• Gripe water. An over-the-counter liquid supplement that provides natural relief — it can ease gas pains and tummy troubles typical for newborns and infants.
• Willby's Wind and Colic Mix. The only 100% natural colic remedy tailored specifically to your baby.

The Anatomy of Reflux

The lower oesophageal sphincter is the muscle that normally keeps stomach juices from backing up into the oesophagus. When this muscle is loose or immature, it stays partially open — creating a backflow of acid and stomach contents into the oesophagus, which causes the pain and discomfort your baby is experiencing.

Reflux, Sleep, and the Baby Sleep Magic Method™

Although I can't take away or remove your baby's reflux, the Baby Sleep Magic Method™ can help you manage it — and help you identify the difference between knowing when your baby is ready for sleep versus when they're genuinely in physical discomfort.

That distinction matters enormously. A baby with reflux still needs healthy sleep foundations — appropriate wake windows, the right sleep environment, comfort and security, and adequate daytime calories. When these foundations are in place, your baby's reflux becomes the only variable disrupting sleep, rather than a tangle of factors all working against you at once.