My 15 week old is fed expressed breast milk plus one bottle of formula per day. She has been very sleepy in the warmer weather and I have been advised by friends and family to give her cooled boiled water to keep her cool. NHS advice states that breastfed babies don't require water but will feed more often if it's warm, and bottle fed babies can be given water. I am confused as to what to do as my lo is not breastfed but bottled fed breast milk, any advice please?