my 2 months old baby weight gain only 400 gms in a month she gained 2 kgs in last two months her birth weight is 2.7 kg current weight is 5 kg

A. A child is expected to gain about 500 g in a month your child is only hundred grams behind just check with your doctor if you need to introduce formula at least two feeding in a day which will help in covering up the remaining weight but otherwise if you look at it the weight of your child is excellent as of now