As your baby grows so will their appetite and you will need to change up your teat sizes.
Bottle feeding teat size.
You must also choose the sizes depending on the bottle you will be using.
Whether you re making the switch from breastfeeding or have been bottle feeding for a while it s important to check that the teats you re using are the right ones for your baby and bottle and that they re in tip top condition.
This might be easier for a newborn baby if the base of the teat is a medium size.
To feed comfortably your baby will need to open their mouth wide and draw in the teat of the bottle nhs 2018.
We recommend changing your bottle teats every two months.
Based on the feeding recommendations avent has nipple sizes for 0 1 3 and 6 months old babies.
The bottle shape and size are not as important to preserving breastfeeding technique as the bottle teat.
Some bottles have a very large capacity e g.
Appropriate if your child has shown consistent feeding with no difficulties and is taking larger amounts at the breast and bottle.
However the size of the bottle is worth considering.
This is because breast fed babies have to work for their milk when breast feeding and breasts usually release milk much slower than a bottle nipple.
Teat size for a breast fed baby.
For formula fed babies an age guide for nipple sizes flow usually.
Nipple size is essentially the flow rate how fast your baby can get liquid will depend on the labeled nipple size.
As a baby s feeding develops and they are taking a longer time feeding from a level 3 nipple many parents choose to move up to a level 4 nipple.
Different types of teat for different circumstances.
260ml 9oz or 330ml 11oz yet a newborn breastfed baby typically does not take anything like these volumes at each feed.
If it is you will need a smaller size.
For a formula fed baby.
All of tommee tippee bottles come with a size 1 slow flow teat designed to suit a newborn baby.
Level 4 nipple 9 months.
The teat size for your baby s bottle is important as it is the teat that regulates the flow of milk to your baby.
You don t want them to be engulfed by milk or struggle to get enough.
Experts recommend using slow flow or newborn teats when bottle feeding a breast fed baby and normally you should never have to move up a nipple size.
Having said that every baby is different so it s a good idea to base your decision on a mix of the above and your baby s own unique eating habits.