i breed em big here too
DS1 is 8 allready 165cm tall- size medium mens clothes and size 9 mens shoes!!! AND HE IS 8 years OLD!!!
they reckon he will be between 6f6 and 7 feet tall!!
Ds2 - 2 years old and towers over all his peers and is the size of a tall 3 year old! He is bigger than my DS1 was as his age!! scary!!
DD- is size 10 womens clothes and size 5 womens shoe and she is 8 years old as well!!

kids are getting taller all the time!!!
dont stress