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The Definitive Guide To Bottle Feeding Your Baby

The following was produced in partnership with our friends at Baby Brezza. From a Bluetooth-enabled bottle warmer, to a multifunctional sterilizer, to a new line of bottles, their intuitively designed products simplify feeding and deliver better experiences for you and your child. 

The new parent mantra, “breast is best,” may be catchy (especially if you repeat it over an R&B sample) but it’s not the whole story. There are lots of reasons you might choose to bottle feed your baby. Maybe they’re unable to tolerate breast milk. Maybe you’re a single dad. Or, maybe your wife started breastfeeding and has to go back to work. The point is, it’s a personal decision based on what’s best for your family, and an option parents choose all the time.

dad feeding baby bottle

If you’re considering the bottle, listen to Sabrina Freidenfelds. She’s an International Board Certified Lactation Consultant and director of the new parent support platform Then Comes Baby who’s got all the facts about bottle feeding — and a surprising number of topical jokes.

How To Start With The Bottle

If you’re transitioning from breastfeeding, try introducing a bottle once a day starting between 4 and 6 weeks old. As for how much milk to give, the rule of thumb is 2.5 times their body weight in ounces per day. So, that would be 25 ounces a day for your 10-pound baby. Are there caveats? You know it!

“If it’s there and flowing in their mouth, they can chug down a bottle way beyond their needs.”

Turns out the amount of milk per feeding changes a ton from day one (roughly 15 milliliters) to day 5 (about half an ounce). Most newborns less than 4 weeks old need 2 ounces or less. And by 6 weeks, it’s more of suggested range. Just note that older babies rarely need 8 or 9 ounces per feeding. It’s not a breadstick basket at the Olive Garden.

Speaking of, don’t rely on a baby to tell you they’re full. “Babies can’t regulate; they have a suck reflex and a swallow reflex, so if it’s there and flowing in their mouth, they can chug down a bottle way beyond their needs,” says Freidenfelds. The reflex eases after a few months, but regulate volume early to avoid overfeeding and putting your kid at risk for childhood obesity.

mother breastfeeding baby in the sunlight

How To Tell If They’re Hungry

If your kid’s old enough to say, “Pass the bottle,” it’s too late. Look for these baby hunger cues: Licking their lips while cocking their head back and forth, sucking on things like their hands, “rooting” (a reflex where newborns turn their heads in small arcs until they find whatever stroked their cheek or mouth), and generally getting more wiggly, squirmy, and tense.

Crying alone isn’t a hunger cue, but frustrated crying because you didn’t notice a hunger cue is. It’s a key distinction. “People feed the baby, see that they seem fussy, assume they’re still hungry, tank ‘em up, the baby chills and goes to sleep, and a cycle of misunderstanding starts,” Freidenfelds says. That cycle makes your kid’s brain think it needs more food than its stomach. This is a lesson they will forget every Thanksgiving.

dad giving bottle to toddler

How Often To Feed Your Baby

For a newborn, you’re looking at about 8 feedings a day. Freidenfelds says during a growth spurt “they’re gonna get wiggy” and want a bottle up to 12 times a day. Since you were promised no math, that averages out to a feeding every 2-to-3 hours.

She also says to go by hunger cues, not the clock. “They’re not wearing a stopwatch saying, ‘It’s been 3 hours.’ If they’re throwing red flags but you don’t feed them because ‘It isn’t time yet,’ they’re saying, ‘WTF?’” Presumably, that stands for, “Where’s the food?”


Baby BrezzaOne Step Baby Food MakerFormula Pro automatic powder formula maker have transformed home baby food preparation and eased mealtime for children and parents.

How To Choose The Best Baby Bottle

Choose a bottle nipple based on your baby’s age: Stage 1 for newborns, Stage 2 for 3-to-6 months, and Stage 3 for 6 months and up. Remember, these are guidelines. It may be 6 months before you move to Stage 2, especially for breastfed babies shifting to bottles. Milk flow is most important, especially at 3 months and younger, and you’ll have to feed your kid a few times before you can spot whether you have it right.


Baby Brezza bottles can simplify feeding and optimize development for your baby.

How To Feed A Baby A Bottle


How you warm the bottle depends on its contents. Formula — whichever kind you buy — will have preparation guidelines. Follow them precisely. For breastmilk, there are a few commonly used options:

  • Microwave. The easy way, especially at 3 AM, is microwaving. Unfortunately, it’s also the wrong right way. Besides killing some of the milk’s antibacterial, immune-boosting goodness, microwaving can create hot spots you might miss that could result in ER visits and serious burns for infants. Yes, you’re exhausted, but don’t ever do this.
  • Hot Water. The traditional way is to sit a bottle in a pot of hot water until the milk warms up. It’s effective but slow, so you’ll have to learn those hunger cues and act early. “Otherwise they get all hangry on you,” says Freidenfelds, the realest lactation consultant in the game.
  • Bottle Warmer. The convenient way is a bottle warmer. Citing her husband’s experience, Freidenfelds says, “Think of how many bottles you’ll prepare in an infant’s first year; how many late nights. To cut prep time by half or more, that investment can be a sanity saver.”

baby drinking from bottle


Freidenfelds recommends “Paced Bottle Feeding,” which mimics breastfeeding and is helpful for transitioning breastfed babies.

  • Hold your baby in a supported sitting position. Try the old La-Z-Boy — hasn’t failed you yet.
  • Start with the bottle relatively flat (not angled down into the mouth) and the nipple angled up slightly towards their palate.
  • Try to get the nipple about half-filled so they have to work a little to get the milk flowing like they would at the breast.
  • Watch for a “suckle, pause, suckle, pause” rhythm. It’ll slow gradually as they get more full, which forces you to pay attention.
  • You can intermittently tip the bottle back up towards the roof of their mouth, which forces them to work for it again.
  • Flow control is key because depending on how fast the milk comes out, babies can guzzle 5-to-6 ounces in 6-to-7 minutes and get overloaded. “A bottle isn’t meant to be fast food,” says Freidenfelds. A feeding should take 10-to-15 minutes depending on the baby’s age.

father burping baby in nursery


In the first 4-to-6 weeks, your kid might need help burping after a meal. And you should give it to them because a giant belch is satisfying. Don’t worry, burping a baby who’s passed out on milk won’t disturb them. Give it 30 seconds, and if they don’t burp, they didn’t have to. If they do, give tiny fist pounds. After about 6 weeks, they can basically do it themselves.

So yeah, there’s plenty to know, but at the end of the day (or in the middle of the night, as it were) remember that you’re doing your job simply by keeping your baby nourished. Don’t overthink it, exercise common sense, and if you ever wonder whether you should wake your kid for a feeding or burping, heed Freidenfelds’ parting advice as she keeps keeping it real:

“If they’re asleep, let a sleeping baby lie and enjoy your life. Hallelujah!”


Baby Brezza’s intuitively designed products have transformed the feeding process, from their first product, the One Step Baby Food Maker, to the first automatic powder formula maker, the Formula Pro. Their new line of Brezza Bottles simplifies feeding to get parents back to what matters most: quality time with their kids.