I mean is it only defined as NO bottles of formula whatsoever for the whole 6 months? My 15 week old has never had any formula but I've started an evening class once a week. I'm struggling to find time to express and was pondering whether to give the odd bottle of formula. But would one bottle every other week or so mean she is no longer 'exclusively' breastfeeding and therefore loses all the benefits associated with that?
Just pondering after reading about the latest bit of research that stated mixed feeding didn't confer the same benefits as exclusive breastfeeding...