My 6 mths old boy is growing well, the only thing that makes me worried is his sleeping habit. He only nurse to sleep. Nothing can help him. He will wake up and cry whenever he finds his mouth has no nipple. Therefore he wakes up about 5 times which disrupts his sleep, this includes nap time as well. How do I change his sleeping behaviour? Pd recommends to give him water instead of bf as by now they should be able to STTN.