I was told by my midwife that you don’t need to sterilise for breast milk so I never have for expressed milk! Apparently the risk of bacteria is in the actual formula rather than the bottles, so it doesn’t apply to breast milk 😊
You should until baby isn’t on formula anymore. :)
I’ve just stopped sterilising as I’ve started weaning. I don’t sterilise baby’s bowls/spoons etc so I’ve stopped with the bottles. Plus everything is going in his mouth now including toys at playgroup that aren’t sterilised. I just make sure I wash them in hot soapy water. I know not everyone will agree with this but this is what I’ve decided to do. My little one is 6 months in 2 weeks.