6-Month check up

Baby Carson had his 6-month check-up last Friday, Oct 10th. He's now 16lb 5.4 oz(7,410g) and 26.5 inches (67.31cm). Compare to other 6-month babies in the states, he's at 27% tile weight and 50% tile height. He's actually catching up in height (from 36% tile to 50%) but falls behind average in weight. Not sure if it's because he exercises a lot at the day care or he needs more food. Since we started feeding him solid food, hopefully he will gain more weight.