I was talking about the end of the arc, run or story. I mean, i was saying parents can sometimes take for granted how fast their children can grow up and how little time they have with them. So, Clark and Lois can have new outlook and appreciation for kid jon, like we fans do. It's like you don't know the true value of something until it's gone.
I am not saying they are going to be bringing up a young version. But, their version of kid jon is still space. This jon is from another timeline in hypertime that can branch of with jon being trapped in black hole. Future Jon thinks he is from this timeline. He begins to realise that he is not. So, he feels it is his responsibility to save kid jon from whatever future jon went through. So he goes and saves him. Resulting in a branch of new timeline in hypertime. Where Jon was saved. And future jon may leave to go to his timeline like future trunks did or legion. They could even have a story were future Jon faces of Jor el. Who has completey destroyed everything by causing a war, and jon will stop it all as superman. Kid Jon can also begin to realise that his future self doesn't have to cause destruction of a city or be uncontrollable danger to the society . That he could become a cool superman.