my child birth weight is 2.9 now she is 55 days old.. her weight is 4 kg.. is it ok.. Or she wants to put more weight. breastfeeding only.. is my milk is enough??

A. milk is enough if baby has pee count around 6-8times and baby is sleeping well.. babies will gain around 500-800g per month after birth.. double birth weight at 4-6months and three times birth weight at completion of one year..