It depends on the weight of the baby at birth
It all really depends on the baby, however the average weight of a 7 week year old baby is 25 pounds around about also depends how much food the baby is fed.
My 11 week old baby boy weighs 12 pound and 1/2 ounce. He is very long, 60.5 cm.
the average weight is 13.2LB
about 8.5kg
The average weight of a newborn baby is 5 lbs and 6 oz. A 2 month old baby (average) is 10 lbs.
20lbs
16 pounds
30 lbs
8kg
@ 25 lbs
9.4 kg
30 To 40 pounds