Do babies have a decreased rate of weight gain as they grow up. If then why does it happen?

A. In initial one week maybe hundred to 300 g is easy due to jaundice but over the age the weight should increase if the weight is not increasing or it is decreasing then there can be a possibility that the feeding that you are giving is not good for the child for overall vail and Ruchi that is check with the doctor and start with a complimentary feeding if required