I would give him a year. I mean lets look at it this way. Can a 14 year old human girl get pregnant? Yes. But she isn't ready. He may be another species and another sex but its the same basic idea. I would wait till he is at least a year and a half to be sure that he is mature. I am waiting till both my snakes are 3 before breeding and Ki is 2 while Cali is 10 months so she has a bit to go. Give him some time. but thats just me