Dear all, my daughter (about 1 month old now) recently refuse to sleep at night. Sometimes she is crying no matter whether you put her down on her bed or even when you hug her in your arm.

She gave me signal that she is hungry (keep on opening her mouth and show me her tongue), for example, I already gave her 2.5oz formula milk, she finished all the milk, but she refused to sleep. 30 minutes later, she will start crying and show me the hungry signal again, then I will give her another 1oz in case she is really hungry. But.....another 30 minutes, she show the signal again!!!

I don't think a newborn baby can get hungry that fast, sometimes if I give her too much, she will vomit some milk out even though we have already done the "Burping" exercise.

I really out of idea now, is there anyone here can provide me some advice?     

My wife don't really want to use rocker as she doesn't want the baby to have any reliance on rocker in the future.
Music is always on when she is sleeping. But not really working for my daughter.
Actually it is not. When the baby still in mummy's tummy, she normally very active in the morning (9-10am) and evening (8pm-9pm). Normally is after food then she will be very active. But now she is active during midnight, ie. 2am to 5am.