My boy is 3 months and his sire a dam are kinda huge. There not kimbertal their Serbian dobermans. I wanted a kimbertal but they had none available. He is only 3 months and already 56 pounds. Is that huge. I saw his parents they were huge but looking

Yes

Its big what did you ask for extra large or a large ifit extra large about right

Lots of Doberman people don't know that Dobermans can be at the AKC standard, around 65 to 90 lbs, or the German variety, which can be 120 to around 150 lbs. Find out how much dam and sire weigh. That will be ballpark, depending on male(more) or female(less).