Stop woke up at middle of night la!

I was so $#@&*(% to my son... this few days don't know why he kept on woke up during middle of the night. Then he will wake me up too just to accompany him. If i refused to woke up, he sure will ask for nen nen la, here itchi, there pain, want to drink water, etc. He drink milk before go to bed. why ha?