How Many Baby Bottles Do You Need for a Newborn? My Advice: Don’t Overbuy

If you’re building your baby registry, you might be wondering how many bottles you actually need for a newborn. My answer after two babies is pretty simple: start with four. If you’re still figuring out what else you actually need, check out my baby registry guide for everything I’d buy again after two babies.

You can always buy more once you know which bottle your baby likes and what your feeding routine looks like. What I would not do is stock your cabinets with a dozen newborn bottles before your baby is even here. Babies can have preferences, feeding needs can change, and they move up in bottle size faster than you might expect.

I actually didn’t plan to buy bottles at all before my first baby was born because I planned to breastfeed. I’m incredibly grateful someone convinced me otherwise.

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Why I Bought Bottles Even Though I Planned to Breastfeed

Before my first baby was born, I assumed I wouldn’t need bottles right away because I planned to breastfeed. Then I spoke with a doula provided through my work, and she recommended that I buy a small pack of Dr. Brown’s bottles and bring them to the hospital just in case breastfeeding didn’t go according to plan. Bottles weren’t originally on my packing list, but they’re now one of the things I’d consider when deciding what to pack in your hospital bag.

I’m so glad I listened. I had trouble breastfeeding in the hospital and ultimately needed to supplement. Having bottles and the formula I had already researched with me meant I had a backup option ready when I needed one instead of trying to figure everything out in the moment.

That experience completely changed the way I thought about newborn feeding. You can absolutely have a preferred feeding plan, but I personally felt much more comfortable the second time around knowing I had another option available if I needed it.

So, How Many Bottles Do You Actually Need?

I recommend starting with four bottles. That’s enough to get you through several feeds without creating an enormous pile of bottles that eventually needs to be washed.

With our second baby, we intentionally kept our bottle collection much smaller. She currently takes about five bottles throughout the day, and we primarily use four of the taller 8-ounce Dr. Brown’s bottles. I still have two 4-ounce bottles floating around that I sometimes use for smaller amounts, such as when I’m introducing allergens or giving her vitamins.

Having fewer bottles has actually made bottle feeding easier for us. When we had more bottles with our first baby, it was easy to keep grabbing clean ones and let the dirty ones pile up. Eventually, you’re left staring at a mountain of bottles and tiny parts at the end of the day.

Don’t Stock Up on Too Many 4-Ounce Bottles

This is another thing I wouldn’t have thought about before having kids. Your newborn may start with tiny amounts of milk, but that doesn’t mean you need a cabinet full of tiny bottles.

Babies can increase how much they drink relatively quickly, depending on their individual feeding needs. Rather than buying a huge supply of 4-ounce bottles, I’d start small and buy the larger bottles later once you know your baby likes that particular bottle brand.

You also don’t need every bottle size and every nipple size before your baby arrives. Start with what you need for those early feeds and adjust from there.

The Nipple Size Matters More Than I Realized

Before having my first baby, I didn’t realize bottle nipples came in different flow rates. The nipple size affects how quickly milk flows, and the nipple that comes standard with your bottle may not necessarily be the flow that works best for your newborn.

My doula recommended that we start with Dr. Brown’s preemie nipples even though my first baby wasn’t premature because my doula preferred the slower flow for newborn feeding. That worked well for us. With my second baby, who was born seven weeks early, we actually started with Dr. Brown’s Ultra-Preemie nipples before eventually moving up.

That was our experience, not a universal recommendation for every newborn. Your pediatrician, lactation consultant, or feeding specialist can help you determine the appropriate nipple flow for your baby, particularly if your baby was premature or is having feeding difficulties.

Why We Chose Dr. Brown’s Bottles

Both of my kids took Dr. Brown’s narrow bottles right away, so we never had a reason to switch. I originally chose them because my doula recommended the anti-colic vent system, which is designed to reduce air during feeding.

I also personally prefer plastic bottles over glass. I understand why some parents choose glass, but after bottles hit the floor one too many times in our house, plastic was simply more convenient for us. That became even more important once our babies started getting older and holding their own bottles.

I also wouldn’t buy a bunch of different bottle brands just because you’re worried your baby won’t like the first one. My preference is to choose one, buy a small quantity, and see how it goes. If your baby doesn’t take to it, then you can try something else without having spent a fortune.

My Newborn Bottle Starter Kit

If I were preparing for a newborn again, I’d keep the setup pretty simple. I’d have about four bottles, preemie or other appropriate newborn-flow nipples based on guidance from your baby’s care team, a bottle brush, dish soap, and a way to easily wash and dry everything.

For us, a bottle washer was one of the biggest upgrades between baby number one and baby number two. We run ours about twice a day, which keeps dirty bottles from piling up. With our first baby, washing bottles by hand at the end of the day was easily one of my least favorite chores.

If you don’t want a bottle washer, you absolutely don’t need one. One trick I like is keeping a dedicated basin or large bowl for dirty bottle parts so they can soak according to safe cleaning guidance rather than letting milk residue dry onto everything. It makes washing all of those little pieces much easier.

If you’re formula feeding, we also love our Baby Brezza formula maker. It was a game-changer for us, but it’s certainly not something every parent needs. I’m pretty selective about which baby products are actually worth spending more on, especially because my overall approach to baby gear is less is more. I’d also wait on things like a travel bottle brush kit unless you know you’ll be traveling soon.

What I’d Buy Before Baby Arrives vs. What I’d Wait On

Before baby arrives, I’d have four bottles, the appropriate slow-flow nipples for your situation, bottle-cleaning supplies, and whatever you need for your planned feeding method. Even if you’re planning to breastfeed, I personally liked having bottles available as a backup because of my experience with my first baby.

I’d wait on buying lots of larger bottles, multiple nipple flow sizes, travel accessories, or a huge supply of your chosen bottle. Once you’ve spent a week or two feeding your actual baby, you’ll have a much better idea of what you need.

My Biggest Advice: Have a Plan B

The biggest bottle mistake I made wasn’t buying the wrong bottle. It was originally assuming I wouldn’t need bottles at all because I planned to breastfeed.

Breastfeeding was my plan, but feeding didn’t go exactly as I expected after my first baby was born. I was grateful that my doula had encouraged me to bring bottles and the formula I had already researched to the hospital. When we decided to supplement, I didn’t also have to make decisions about bottles and formula while exhausted and overwhelmed.

That doesn’t mean everyone needs to supplement, introduce a bottle immediately, or follow the same feeding approach we did. Feeding decisions are personal, and individual circumstances can be very different. My takeaway is simply that having a backup option made me feel more prepared when my original plan changed.

After Two Babies, Here’s What I’d Do

If I were preparing for another newborn tomorrow, I would buy four bottles and stop there. I’d choose one bottle brand, make sure I had an appropriate nipple flow, and wait to see how my baby did before buying anything else.

You don’t need a cabinet overflowing with bottles to be prepared. In our house, fewer bottles actually made feeding easier because we stayed on top of washing them instead of letting dirty bottles accumulate all day. Start small, see what works for your baby, and add what you need later.

Frequently Asked Questions

How many bottles do I need for a newborn?

I recommend starting with about four bottles. You can always purchase more once you know your baby takes that particular bottle and you understand how often you’ll be feeding and washing bottles.

How many 4-ounce bottles do I need?

I wouldn’t stock up on 4-ounce bottles. Babies may outgrow the smaller capacity relatively quickly, so I’d start with a few and move to larger bottles when you need them.

Should I buy bottles if I plan to breastfeed?

You may still want to have a few bottles available. I originally planned to breastfeed exclusively and almost didn’t buy any bottles, but I was very grateful to have them when my feeding plan changed after delivery. Whether and when to introduce a bottle can depend on your breastfeeding goals and your baby’s needs, so you can also discuss timing with your pediatrician or lactation consultant.

Should I buy several different bottle brands before my baby is born?

I wouldn’t. I prefer choosing one bottle, buying a small pack, and seeing whether your baby takes it. If it doesn’t work, you can try another brand without having an entire cabinet full of unused bottles.

Do newborns need preemie nipples?

Not necessarily. My doula recommended preemie nipples for my first baby because of their slower flow, and my premature second baby started with an Ultra-Preemie nipple. The appropriate nipple flow depends on your individual baby, so ask your pediatrician, lactation consultant, or feeding specialist if you’re unsure.

Are 4-ounce or 8-ounce bottles better for newborns?

Newborns typically drink smaller amounts, so smaller bottles can be convenient at first. However, I wouldn’t buy too many because you may be able to use larger bottles as your baby starts drinking more without replacing your entire bottle collection.

Do I need a bottle washer?

No, but ours has been one of my favorite conveniences with baby number two. We run it about twice a day, and it keeps dirty bottles from piling up. If you’re washing bottles by hand, having a dedicated bottle-washing routine can make the process much more manageable.