It's not really like that. It's more of the snake telling you when it is ready to breed. Most will start breeding when or shortly after females begin feeding heavy. When my females come flying out of the bins looking for food they get fed heavy as it is almost time to start breeding. Watch your snakes and they will tell you what to do. It's not just a matter of throwing them together they lock and you are definately going to get eggs.

People who are still getting eggs and ovys are because that is when that particular snake is ready, not because the person decided to put a male 4 months after he started breeding all the other girls.