Really depends on the child, as long as their in their normal ranges (depending on the child that can vary). Some children are small and some are big as babies. For instance, my little man is 6 months old weighs 22 lbs and is 28 inches long. I always get he's so big and yes he's in 12 month clothes, he's just a big boy and growing so fast lol.
My son is 9.5 months as well. He weighs about 20 lbs and is in the 75-85%. It all depends on your family genes...some say my son is small and others say he's soooo big. Just listen to yourself and your doctor.
My DS2 is 10 1/2 months and at his 9 month check up last month he weighed 19 lbs 4 oz and was 29 1/3 inches long. He was in the 85th percentile for height and only the 30th percentile for weight.
When DS1 was 9 months old he only weighed 17 lbs 4 oz and was 27 1/2 inches long. He was born exactly 3 weeks early (and spent 6 days in the NICU). He is always been on the smaller side. He is now 2 1/2 and weighes 26 lbs and is 33 inches tall. It wont be long before his little brother catches up to him!
We were at the Doctor on March 6th for the 9 month check up. He was 19.9 lbs. And 28 inches long. Doc said he is below average but completely normal. He was born 4 weeks early and always has been smaller than most babies. He will be 10 months on Saturday.
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