How to increase my baby weight. He is 2 months and 18 days old. current weight is 4.7kgs. Born weight 2.8kgs. Can I use any drops like multivitamins?

A. Well your child has gained approximately 2 kg which is very good as per the current age of your child a minimum expectation is 500 g in a month your child is gaining better than that multivitamin and vitamin D are important for initial one year of birth so you should give it