deebee,
we sleep in aircon room, set aircon temp at 25 degree with slow fan blowing. he juz wear long pants n short sleeves t shirt, no more socks since 3.5 mths. put blanket over him, but he will move around the cot as well, he do without the blanket. if he is dun feel warm, he will hv soft cry, so i wake up n put blanket over him lah!