I'm leaving weaning until 6 months - but when exactly is 6 months?! Do you count a month as 4 weeks, or go by the calendar date? eg. DS was born on Thursday 13th September - so do I count it from 13th September to 13th October to 13th November etc. Or do I count 4 Thursdays as being one month? I know the 6 month thing is only a guideline so it doesn't matter much either way, but depending on which method of counting you choose it does alter the date by a few weeks, so I'm curious what method most people use