my baby is 2 months 19 days old...at birth she has 2.255 kg. now she is having 3.800 kg. is this weight gain is normal? she is exclusively breast feeding.

A. this is normal,Babies tend to gain weight fast and then slow down. In the first few months, babies gain about 1 ounce (28 grams) a day. That slows at around 4 months to about 20 grams a day. As they turn 6 months old, many babies are gaining about 10 grams or less a day.