hii meri beti 3 mnth ki h bt uska weight bohot kam hai birth weight 2.8kg tha or abhi 4.2 kg h mai kya karu pls suggest me please

A. The Child has gained 1400 g in three months from where do you think that the wait is less because 300 to 400 g in minimum in a month is considered good so even if I look at it with 400 g 200 g up in gaining the weight so which is excellent your child is nowhere having less weight so don’t worry about it