DS who has always had a "robust" appetite (to the extent that he was often referred to as Bottomless Pete) at 6.5 months has just sort of dropped off. He's eating purée twice a day (roughly 2 dessert spoons at a sitting) and was doing in 240ml x 5 per day and suddenly it's tailed off....he's otherwise fine, just eating less than normal.
Any ideas? Should I be worried ?