question: Hi, my self Narendra, My son 4.5 months old, he is quite growing good and does not cry or some thing in day time. But when it comes in night times, He normally sleeps for one or one and half hours and gets up and then his mother has to feed him milk and then he sleeps for one or one and half hours and that s how night goes. I am really not understanding why it is happening to him. Also when he gets up, he rolls himself on stomach and tries to sit and starts crying until unless him mom does not feed him milk. I just want some suggestions whether he is OK or any thing wrong that we are not able to understand that he is probably feeling or so. Even we went for his vaccines today and consulted doctor about the same and doctor says that it s OK and baby does not have any problem. But only question I heard that if baby does not take long sleep in night than it affects babies growth. Is that correct? Looking for some good response on this. --Narendra