Hi T_T,
I bought Sleepy Wear from Baby Slings and Carriers at Sq 2, 03-156. It's a long piece of cloth wrapped around our body and have the baby very closed to us. I have tried it for few weeks now, and my son falls asleep easily in this. It's said to calm crying babies and have them sleep for longer hours. Alternatively, you may want to consider swaddling your baby at night, if you currently are not. I delivered a boy in March, and for the first 2 weeks, my son kept us up for the 12-2am shift. I decided to swaddle him fm week 3 onwards and he's been sleeping well ever since. He now sleeps between 10-11pm and wakes up between 6-8am. He gets his sound sleep, I get my beauty sleep. Hope this helps.