One and a half months of baby sleep humming always make most of the normal situation, because for such a big baby, his daily time is eating, drinking and sleeping, and then it is crying and rolling over activities. For such a big baby, not very well adapted to the outside world, may appear to sleep not very soundly, or always sleep, sleep more tired, so want to roll over. For him, rolling over is a lot of effort. He does not have this ability, so he will be riveted to stir his legs and make grunting and grunting sounds. There may also be a lack of calcium, because at this time the baby grows faster, and the demand for vitamin D is greater, it is recommended that daily supplementation of cod liver oil, vitamin D3 or vitamin AD, and if the weather permits you can sunbathe in the sun.