My baby is 4 months 7 days old and she is just 5.8 Kg and I’m giving her exclusive breast feeding. Is that weight normal??

A. Depending upon what was the birth weight your child should be minimum gaining about 500 g in a month if that is there then it is not a problem and if that is not there then this is underweight and if it is more than 500 g gain in a month then that’s very healthy please calculate accordingly