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Infant feeding

Get advice and support with infant feeding from other users here.

Making formula bottles

16 replies

CS86O · 20/11/2025 08:19

Feel like an idiot asking this but I've just switched to formula after 12 weeks of expressing breastmilk (huge credit to all of you that could carry on, it was killing me!).

How the hell are you making bottles without it taking forever!?!?!?!? I understand how, and the phrase 'at least 70 degrees' makes sense for killing any bacteria in the formula so I boiled and cooled a load of water in sterile bottles, put them in the fridge and make the milk using water just off the boil ('at least 70 degrees' tick!) and added the cold boiled water to even out the temp.

Then I read that the water can't be that hot because it denatures the nutrients or something? Who the hell is boiling the kettle half an hour before the feed is needed!?!?!? And who has 2 minutes with a screaming baby to hold a bottle under cold running water?!? My mind in blown and expressing breast milk is starting to seem like a doddle compared to this!

What am I missing? And I've seen the Nuby but then cleaning and sterilising 6 or 7 times a day!?!? No thanks! Any advice VERY much welcome!

OP posts:
LittleMxPerfect · 20/11/2025 12:24

I make the bottle 45 mins before needed then it has time to cool. hot shot method not recommended as not enough hot water to kill all bacteria.

addictedtotheflats · 20/11/2025 12:32

I've always used freshly boiled kettle water. If I was doing 5oz I'd do 3oz boiled and 2oz cooled boiled, whos waiting until its 70 degrees, how would you even know its 70 degrees.

BriocheForBreakfast · 20/11/2025 12:37

I used to make up bottles of boiled water for the day in sterilised bottles and then shake in a portion of formula when I needed it. DD preferred her milk at room temperature so it worked for us.

BriocheForBreakfast · 20/11/2025 12:38

I had something like this for making up the formula portions. Very portable. I had two iirc

https://amzn.eu/d/96m9won

Amazon.co.uk

Amazon.co.uk

https://amzn.eu/d/96m9won?tag=mumsnet&ascsubtag=mnforum-breast-and-bottle-feeding-5447128-making-formula-bottles

MarvellousMonsters · 20/11/2025 12:41

BriocheForBreakfast · 20/11/2025 12:37

I used to make up bottles of boiled water for the day in sterilised bottles and then shake in a portion of formula when I needed it. DD preferred her milk at room temperature so it worked for us.

The water needs to be at least 70°c when the powder goes in because the powder is not sterile, and the heat is needed to reduce the bacteria in it. Boiling water and putting it in bottles and adding the powder when the water has cooled doesn’t reduce the bacteria.

K0OLA1D · 20/11/2025 12:43

I batch made enough for 24 hours. Cooled them and put them in the fridge and then warmed them up when needed.

Never had any issues. I used to sometimes use the pre made ones for DC2 as well

HostaCentral · 20/11/2025 12:45

Make up 6 at a time, put them in the fridge. Take out half hour before needed to get to room temp. I never bothered warming!

Heidi2018 · 20/11/2025 12:46

K0OLA1D · 20/11/2025 12:43

I batch made enough for 24 hours. Cooled them and put them in the fridge and then warmed them up when needed.

Never had any issues. I used to sometimes use the pre made ones for DC2 as well

I've formula fed 2 babies, tried lots of different techniques, and this was by far the easiest, most time efficient, and quickest with a hungry baby. Extra easy if you get them to enjoy taking a cold bottle, mine always like the sting gone out of it but not quite warm so didn't take long to heat up.

usedtobeaylis · 20/11/2025 12:49

I used the Perfect Prep machine, and a Tommee Tippee microwave steriliser. If for some bizarre reason I found myself having another baby now, the Perfect Prep is the first thing I would buy.

mondaytosunday · 20/11/2025 12:54

I used to make up the bottles and put them in the fridge, taking them out about half an hour before needed to warm up to room temperature. My baby was on a fairly predictable schedule (I also didn’t have my baby on bottles til five months, so he had settled in to a schedule by then).
Don’t get your baby used to warmed up milk, room temp is fine.

oneplustwoplustwoplusone · 20/11/2025 12:55

Formula kettle was my best buy

https://amzn.eu/d/iC6TZfv

also measured out the formula for the day in these

https://amzn.eu/d/8KMlTXO

Amazon.co.uk

Amazon.co.uk

https://amzn.eu/d/iC6TZfv?tag=mumsnet&ascsubtag=mnforum-breast-and-bottle-feeding-5447128-making-formula-bottles

MarvellousMonsters · 20/11/2025 13:00
  • “ “Step-by-step guide to preparing a formula feedStep 1: Fill the kettle with at least 1 litre of fresh tap water (do not use water that has been boiled before).
  • Step 2: Boil the water. Then leave the water to cool for no more than 30 minutes, so that it remains at a temperature of at least 70C.
  • Step 3: Clean and disinfect the surface you are going to use.
  • Step 4: It's important that you wash your hands.
  • Step 5: If you are using a cold-water steriliser, shake off any excess solution from the bottle and the teat, or rinse them with cooled boiled water from the kettle (not tap water).
  • Step 6: Stand the bottle on the cleaned, disinfected surface.
  • Step 7: Follow the manufacturer's instructions and pour the amount of water you need into the bottle. Double check that the water level is correct. Always put the water in the bottle first, while it is still hot, before adding the powdered formula.
  • Step 8: Loosely fill the scoop with formula powder, according to the manufacturer's instructions, then level it using either the flat edge of a clean, dry knife or the leveller provided. Different formulas come with different scoops. Make sure you only use the scoop that comes with the formula.
  • Step 9: Holding the edge of the teat, put it into the retaining ring, check it is secure, then screw the ring tightly onto the bottle. Make sure the ring is attached firmly.
  • Step 10: Cover the teat with the cap and shake the bottle until the powder is dissolved.
  • Step 11: It's important to cool the formula so it's not too hot to drink. Do this by holding the bottle (with the lid on) under cold running water.
  • Step 12: Test the temperature of the formula on the inside of your wrist before giving it to your baby. It should be body temperature, which means it should feel warm or cool, but not hot.
  • Step 13: If there is any made-up formula left in the bottle after a feed, throw it away”

https://www.nhs.uk/baby/breastfeeding-and-bottle-feeding/bottle-feeding/making-up-baby-formula/

nhs.uk

How to make up baby formula

How to make up formula milk feeds for your baby correctly and safely.

https://www.nhs.uk/baby/breastfeeding-and-bottle-feeding/bottle-feeding/making-up-baby-formula/

Morecoffeethanks · 20/11/2025 13:01

We had a nuby rapid cool, are these still okay to use? I know the advice changes so regularly on what is good and what isn’t.

Blondeshavemorefun · 20/11/2025 13:12

i use 2 flasks if out /night time or a kettle and flask daytime

One with hot boiled water

One with cold previously boiled water

And make up feeds that way so own perfect prep

That how I often make feeds up and I'm a maternity practitioner

It's roughly 1/3

So for a 4oz bottle 1 oz hot. Add 4 scoops - swirl and then add 3 oz of the cool boiled water

Or 6oz - 2 oz hot. 6 scoops. Swirl and add 4oz prev boiled cold water

always swirl not shake. Less bubbles /air

years ago like 30yrs I wouid make all the days bottles in one go and heat but no better to make fresh and to use 70* + to kill any bacteria - apart from cmpa milk and made with Luke warm

Seawolves · 20/11/2025 13:18

I have a kitchen kettle that boils to 70/80/90/100° and has a 'keep warm' setting. I use hot water from the kettle set at 70° then top up with cooled boiled water.

stackhead · 20/11/2025 13:22

Buy a perfect prep, use the correct filter and clean it properly. Jobs a good-un.

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