How Many Bottles Do You Actually Need as a New Parent?

One of the most common pre-baby shopping questions: how many bottles do I actually need? Buy too few and you're constantly washing. Buy too many of the wrong type and you've wasted money.  

How many bottles: the short answer 

For exclusively formula or bottle-fed babies:  

Newborns (0-3 months) feeding 8-10 times a day:
8-10 bottles total gives you a full day's rotation without washing mid-cycle 

Older babies (3-6 months) feeding 5-7 times a day:
6-8 bottles is usually sufficient 

Babies 6-12 months with fewer milk feeds:
4-6 bottles 

For combination feeding (breast and bottle mixed):  

4-6 bottles is usually enough since you're not running a full rotation of bottle feeds

For predominantly breastfeeding with occasional bottles:

2-4 bottles is plenty – you're not sterilising 8 times a day 

These are starting points. Some parents run tighter rotations with fewer bottles and wash more frequently. Others like having a full day's supply clean and ready. Neither approach is wrong. 

Which bottle size do newborns need? 

Newborns take small volumes – typically 60-90ml per feed in the first few weeks – so smaller bottles (150ml) make practical sense early on. As feeds increase, you'll need larger bottles (260ml or 250ml depending on brand). 

Many parents start with a mixed pack of 150ml and 260ml, or buy a starter set from one brand. Most manufacturers sell newborn starter sets that include both sizes. 

One consideration: don't bulk-buy a single brand before your baby arrives. Some babies have strong preferences for certain teat shapes, particularly if you're combination feeding. Wait until you know what your baby accepts before committing to 12 bottles of one type. 

Newborn anti-colic bottles: are they worth it? 

Anti-colic bottles aim to reduce the amount of air a baby swallows during feeding, which can contribute to wind and discomfort. Common designs include vented teats, angled bottles, and internal venting systems (Dr Brown's is the most well-known example). 

Do they work? The evidence is mixed. For babies who genuinely suffer from colic or severe wind, anti-colic bottles can make a meaningful difference. For babies who don't, they're an added expense and more components to wash and sterilise. 

A pragmatic approach: start with a standard bottle. If your baby shows signs of significant discomfort after feeds, try a vented option before committing to a full anti-colic set. 

Glass vs plastic bottles 

Glass bottles are heavier but don't degrade or stain over time. Plastic bottles are lighter and less breakable, but low-quality plastic can absorb odours and discolour after several months of daily use. 

For newborns in particular, the weight difference between glass and plastic doesn't really matter – you're holding the bottle at every feed. As babies get older and start holding bottles themselves, lighter plastic makes more sense. 

Both are perfectly safe if they're BPA-free (all bottles sold in the UK are required to be). 

The washing factor 

How many bottles you actually need depends on how often you're washing and sterilising. With a manual routine (handwash, sterilise, dry between each cycle), having 8-10 bottles means you can run one batch of sterilising per day rather than two or three. 

With an all-in-one machine that sterilises a full day's load in one cycle, you need fewer bottles in reserve because turnaround is faster. The Bebello 4-in-1 holds up to 8 bottles per cycle, so most parents find 8 bottles gives them easy coverage. 

Once you've sorted how many bottles you need, sorting how you're going to keep them clean is the next question. The Bebello 4-in-1 washes, sterilises, and dries up to 8 bottles per cycle. 

Frequently asked questions 

How many bottles do I need for a newborn? 

For an exclusively bottle-fed newborn feeding 8-10 times a day, 8-10 bottles gives you comfortable daily coverage. If you're hand-washing and sterilising mid-day, you can manage with fewer. 

Is it worth buying different brands to try? 

Yes, especially if you're combination feeding. Many parents find their baby has a preference for a particular teat shape. Starter packs from multiple brands let you find what works before buying in bulk. 

When should I replace baby bottles? 

Replace bottles if the plastic is scratched, discoloured, or cracked, or if teats show any signs of thinning or damage. Teats in particular should be replaced every 4-6 weeks with heavy daily use. 

Can newborns use any bottle teat flow rate? 

Newborns need slow-flow teats. Fast or medium-flow teats will deliver milk faster than they can handle, causing gulping, choking, and excess wind. All major brands label their teats by flow rate.