The best way we’ve found to get perfect temperature bottles quickly to a hungry baby is this:
1) sterilised your bottles for the next 24 hours
2) boil water and add 2/3 of the usually required amount to the bottles
3) keep in the fridge until needed. When feed time comes around or baby starts crying for a bottle just put the kettle on. Then 4) add the remaining 1/3 of boiled water to the bottle, add your decanted formula, shake well and you’re good to go.
ALWAYS check the temperature of the water before giving it to baby.