First there was the "don't drink at all in pregnancy" advice as you can't be trusted to know what a unit of alcohol is and stick to a low limit. Now it appears that part of the reason for saying "don't wean until 6 months" was to decrease the number of people weaning before 4 months. All of this means that people who try to stick to the guidelines end up having an unnecessarily shit time. I've has enough guidance and my 4 month old DD is now trying to wean herself on newspaper.