Sterilise bottles. Boil kettle. Let kettle sit for 30 min. Make up a day's worth of formula in the bottles. Cool bottles rapidly (plastic tub full of cold water) to prevent time where bacteria can grow in warm milk. Put in fridge.
Take out of fridge 20 min before feed time. Stand in bottle warmer. Give warm milk to baby. Sorted.
Ours is a thriving year old and caught nothing from the above method that was recommended by several parents. The cooling rapidly seemed a good point.

