There is many different producuts out u can feed during the summer months while antler growth is in prossess that will add a big part in his growth. but knowing the age of the deer also plays a big role in the harvest, like u say he is with ur guess a 2-2 1/2 yr old deer he may have genetic to where he will not get any wide only time will tell, my suggestion is to feed a high protein supplement during the summer mthsfor the next 2 yrs he just being a 2 -2 1/2 yr old still has 3 possibly 4 yrs to his peak and that the only honest way to know his full potential.