I'm a bit worried tbh. I'm not really one for centile charts, as I think they are a load of toot. However, DS's weight is hovering between the 9th and 25th line, where as his head circ is off the scale. He's 9 months old, yet I struggle to get his head through t shirts for 12-18 months. Should I be worried about it, or am I being a bit neurotic?