I don't put much faith in the growth charts. Rily was charting small...but, he over shot the chart at 9-9.5 lbs. Saydee was charting even bigger...but, she hasn't grown any in the last 4-6 weeks, hovering around 6-6.5 lbs.
So, you never know until they are done!...some stop early (Saydee)..some continue to grow longer (Rily)