My MCHN (not officially but off the record told me cos she is 'meant' to follow WHO.) and dr both recommended starting my little girl at 4 months. Millie was more than ready by then and loooooooooves her food. From what they said, new research shows that waiting can cause more allergies and there is more kids with allergies now than ever before after the 6 month rule was introduced.

I think each baby will tell you when they are ready.