That is a crazy amt of milk.
My son is in the 100th percentile for height, and 85th for weight at 2, and your son is nearly double the weight of mine. Your son is well and above the top end of the scale (34 lbs at 2 is 95th):
http://www.cdc.gov/nchs/data/nhanes/...l/cj41l017.pdf
The only reason my son was still on whole or vit D milk at 2 was he had started the scale for height, but was way low for weight. Once he climbed above 75%, the pediatrician said to cut back to 2%.
1) do you have a pediatrician (please say yes) and what has he/she said??
2) one issue with drinking so much milk is whether your child is getting the proper nutrition... if the milk is mostly what he's getting, that's an issue.
3) my son is showing the same growth pattern as his grandfather did, 6ft 4in. He was 6ft tall in 6th grade. Some kids grow fast. But I'd be talking to professionals about this to make sure there isn't a thyroid or metabolic issue.
How tall is your son at age 2?