my son has the same case, eat every 3 hrs for 4.50 oz, he born on 19 Oct, 有時佢dao好似食唔夠, but i did not add more for him. i am afraid he iseatting too much too.
i had try to 隔4個鐘先 give him milk, but fail... he start to cry for every 3 hrs...so... lastly i give up..
幾時可以戒夜奶 <-- you can try to do this when bb is 1 1/2 month's old.
and usually, i will not wake him up no matter at day or night time if he is sleeping.