I personally think that after 1500 grams, you can start maintenance feeding a male. I don't think you continue to feed that male like you did to get him to that size. He will continue to grow, but not at the same pace as he once did. A snake will continue to grow it's entire life, unless you starve that snake. So, trying to keep a snake at a certain weight isn't healthy and we all know, that a healthy snake is going to be a better breeder for you.
Jim Smith