Hello,she is not gaining weight much 1month old at the time of birth she is 2.6 weight now 3 kg only

A. It’s important that the child should gain 500 g in a month so just wait for next month if the child gains 500 g in the coming month it’s okay otherwise substitute your child is feeding twice or twice in a day with formula and rest of the time you can continue with breastfeeding your child