hi my son used to sleep last month very late or even i can say 2hrs in the whole night he made his habit to sleep morning 5clk and wake up 2clk in the noon but from 14th may he started suddenly sleep at 12 or 11 clk night and wake up early in the morning 5clk as its a good time I feel .but am in confusion tha he is getting dark circles now in dis age in spite of having good sleep dis month can u suggest me where am lacking and suggest me some diet to avoid dis even am giving him calcium and iron syrup