My baby was 2.5kg at birth, today she completed 6 weeks, and is 2.9kg, is it normal ?

A. It is less because every week the child should show again of about 102 150 g 500 g in a month approximately so your child is lagging for about 104 150 g which you can pick up in another month if you still do not see that your child is showing again of 500 g in a month then along with breastfeeding you can check with your doctor if you can give three or four feeding of formula milk