my baby birth weight is 3.52 kg and now 10 days baby weight is 3 kg is it ok?

A. Namaste Mom, After few days of birth , baby would tend to loose some weight , and then they regain first the birth weight , and then start to gain weight, were in montly weight gain is expected in range of 400 gm to 1kg and by age of 4 to 6 months they double their birth weight