A happy baby crawling on a bed next to a Thyseed anti-colic glass bottle for a newborn feeding.Bottle Feeding 101: A Guide for New Parents

Bringing your newborn home is a whirlwind of joy and questions. Bottle feeding newborn babies seems straightforward, but where do you start? Which bottles? How much? It's easy to feel overwhelmed. This simple guide will walk you through everything, from picking the right gear to mastering that first feed, giving you the confidence you and your baby deserve.

Choosing the Right Gear: A Breakdown of Bottles and Nipples

Walking into a baby store (or browsing online) can be dizzying. The wall of bottles is endless. But the "best bottles for newborns" really come down to three things: material, nipple, and anti-colic features.

The Great Material Debate: Glass vs. Plastic vs. Silicone

Glass

Glass represents the classic, old-school choice for a reason. High-quality, borosilicate glass is non-toxic, free from chemicals like BPA/BPS, and won't stain or hold odors. It's very easy to clean and sterilize. The main downsides are that glass is heavier and, of course, breakable.

Plastic

Plastic remains the most common option. Plastic bottles are lightweight, affordable, and shatterproof. The most important rule: ensure they are BPA-free. Modern, high-quality plastics like PPSU are more durable, heat-resistant, and have a longer lifespan than cheaper plastic bottles.

Silicone

Silicone, a newer option, combines the benefits of the other two. Silicone baby bottles are flexible, lightweight, and unbreakable. They are free from plastics and other chemicals, and their soft, squeezy texture can be easy for a baby to eventually hold.

The glass vs plastic baby bottles debate is personal. Many parents choose glass for peace of mind at home and use a lightweight plastic or silicone bottle for their diaper bag.

Nipple Shape and Flow Rate

The nipple is arguably more important than the bottle itself. It serves as your baby's point of contact.

Shape: You will see a few shapesβ€”traditional (narrow), orthodontic (angled), and breast-like (wide-mound). Many parents who are combination feeding (using both breast and bottle) look for a baby bottle like breast. These have a wide, soft, and flexible base that encourages a deep latch, similar to the breast, which can help prevent "nipple confusion."

Flow Rate: Nipples come in different "flow" levels (e.g., Slow Flow, Level 1). For newborns, you should always start with the slowest flow available.

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If the flow is too fast, your baby may gag, choke, or overeat.
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If it's too slow, they may get frustrated, tire out, and swallow a lot of air.

Anti-Colic Features

"Colic" is a broad term, often linked to the pain of trapped gas. Anti-colic baby bottles use special vents, tubes, or internal systems. These systems work by allowing air to enter the bottle as the baby drinks, preventing a vacuum from forming. This means the baby swallows milk, not a stream of air bubbles, leading to less gas, fussiness, and discomfort.

How to Prepare a Bottle: A Step-by-Step Guide

Whether you use breast milk or formula, safe preparation holds the key.

1
Wash Your Hands
Always start with clean hands, a clean bottle, and a clean work surface.
2
Check Your Milk/Formula
Ensure it's not expired and has been stored properly.
3
Prepare the Formula (if using)
Read the instructions on the formula tub. Always measure the water first, then add the powder. Adding powder first can make the ratio of water-to-formula incorrect. Use the scoop provided and level it off.
4
Mix Gently
Instead of a vigorous shake (which creates air bubbles), try swirling the bottle to mix the formula. This helps reduce the amount of air your baby will swallow.
5
Warm if Desired
A baby does not need a warm bottle, but many prefer it.
Important Safety Notes

DO: Place the sealed bottle in a bowl of warm (not boiling) water for a few minutes.

NEVER: Use a microwave. It creates "hot spots" that can severely burn your baby's mouth.

Test the Temperature: Before feeding, always shake a few drops onto the inside of your wrist. It should feel lukewarm or neutral, not hot.

Positioning and Paced Bottle-Feeding

This step ranks as one of the most important for bottle feeding newborn babies. The right position and pace can prevent choking, overeating, and gas.

Best Bottle Feeding Position for Newborns

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Hold Your Baby
Never, ever prop a bottle in your baby's mouth and walk away. Propping a bottle is a choking hazard and can lead to ear infections.
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Sit Them Up
Your baby should be in a "cradled" but semi-upright position. Hold your baby so their head stays comfortably higher than their stomach. This uses gravity to help the milk go down.

Paced Bottle-Feeding

This method mimics breastfeeding and gives your baby control over the meal.

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Hold the bottle horizontally (parallel to the floor), tipped just enough to fill the nipple with milk. It differs from the old method of pointing the bottle straight down.
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Tickle their lip: Let the baby's own rooting reflex open their mouth wide.
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Let them latch: They should take the entire nipple, not just the tip.
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Watch for cues: Paced bottle-feeding helps the baby control the flow and gives them control. They will suck for a bit, then pause to rest and breathe. These pauses are normal.
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Take breaks: If they seem to be gulping, gently tip the bottle down to empty the nipple and give them a moment.
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Stop when full: Don't force them to finish the bottle. Watch for fullness cues: turning their head away, pushing the bottle out, or falling asleep.

Don't Forget to Burp! Techniques and Timings

Babies swallow air during feeding (and crying). This air gets trapped and causes discomfort. Burping helps release it.

When to Burp: Try burping your baby when they are halfway through the bottle and again at the end of the feed.

How to Wash and Sterilize Baby Bottles Safely

A newborn's developing immune system makes proper cleaning essential.

Washing (After Every Feed)

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Immediately rinse the bottle parts after a feeding.
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Wash all parts in hot, soapy water. Use a dedicated bottle brush to clean the bottle and a small nipple brush to get inside the nipple.
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Rinse thoroughly and let air-dry on a clean dish towel or drying rack.
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Alternatively: Most bottle parts (especially glass and high-quality plastic) are safe for the top rack of the dishwasher.

Sterilizing (Daily for the first 2 months)

Experts recommend daily sterilization for infants under 2 months, or for babies who are premature or have a weakened immune system.

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Boiling
Boiling offers the easiest method. Submerge all parts in a pot of boiling water for 5 minutes. You can use this easy method for how to sterilize glass baby bottles.
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Steam
Use a microwave steam bag or an electric countertop steam sterilizer.

Your Bottle Feeding Success Starts Here

Choosing the right gear can feel like the hardest part, but it doesn't have to be. We designed the Thyseed bottle to solve these common worries. We craft it from premium borosilicate glass, making it non-toxic, durable, and a breeze to clean. We obsessed over the details that matter: a dynamic anti-colic ventilation system to reduce air intake, and a breast-like nipple that promotes a natural latch. It combines the simplicity of glass with the best in feeding technology, all to help you build a confident, nurturing bond with your baby.

Conclusion

Bottle feeding your newborn provides a journey of learning and bonding, not about perfection. With the right information and a little practice, you'll find a rhythm that works for you and your baby. Trust your instincts, be patient, and cherish these quiet feeding moments. At Thyseed, we support every step of your new beginning. Explore our baby-centric designs to make feeding simple and safe.

FAQs about Bottle Feeding

Q1: How much milk should my newborn eat?

A newborn's stomach starts tiny! In the first few days, they may only take 1-2 ounces per feeding. It will gradually increase. A general rule is to follow their cues. They should feed every 2-4 hours. When they seem full (turning away, relaxed hands), stop the feeding.

Q2: Can I reuse milk left in a bottle?

No. Once the milk (breast milk or formula) has touched your baby's mouth, bacteria from their saliva begin to break it down. You should discard any milk left in the bottle within one hour.

Q3: How do I know if the nipple flow is wrong?
  • Too Fast: Your baby sputters, gags, coughs, or lets milk dribble out of their mouth.
  • Too Slow: Your baby sucks very hard, becomes frustrated, and the feeding takes a very long time (over 30-40 minutes).
Q4: Is it okay to switch between breast and bottle?

Absolutely! We call this "combination feeding." Many families use this method successfully. To help, use a paced-feeding method and a slow-flow, breast-like nipple to make the transition between breast and bottle as seamless as possible.