ahwang, maybe can try to let your baby sleep on her tummy? like what lizzy said, my gal also can sleep very long if put on her tummy. normally i on aircon, make the room cooling and on the humidifier, on some night lights and i let her sleep on the bed, either my bed or my mum's bed. averagely she can sleep for a good 2-3 hours. on good days she can last up to 6 hours or even more.. i do not wake her up for feeding. i let her wake up on her own..