Newborn babies from one month to three months, weight, sleep, limb movement, vision and other aspects will appear obvious changes, but the specific circumstances vary from person to person. 1. weight: newborns from one month to three months, there will be a significant increase in weight, visible to the naked eye, and a large change in body size; 2. sleep: one-month-old babies sleep for a relatively long time, and by three months, babies sleep for a significantly shorter period of time; 3. body movement and vision: at three months, infants can carry out activities such as lifting their heads and turning over without external help, and also become more active and mobile. Their vision develops more maturely, with their sight moving with objects and making sounds in their daily lives in an attempt to communicate with others.