No, the comment he made was along the lines of "You'll need to get him a girlfriend soon, otherwise he's going to become a handful", which I took to mean that he thought I should, rather than could, breed him quickly?
I'm going to take on board, what you chaps have said, and leave him another couple of months. Just looking at him, alongside the 7 month doe, he's about the same size, but he still looks younger, somehow...