"Within the first 5-7 days after birth, your baby will lose around 5-7 percent of its weight. If your baby weighs up to 3 kgs after birth, then after 5-7 days, the weight will get down to 2.9 kgs. However, the weight gradually increases to 3kgs again after 7-8 days. On the other hand, if your baby loses more than 10 percent of the weight within the first 5-7 days, make sure you immed... https://sahyadrihospital.com/videos/normal-weight-of-new-born-baby/