Doesn't it matter though? If he actually has kids, I'd imagine they'd rather see him a bit more spry than have visiting rights to a vegetable. As a result, it would then matter to him as well.
It's also literally hard to imagine trying to dream the trajectory of your first children's lives if you've never watched children grow before, so I'm not even sure how that would be feasible to do without contradicting your own dream-reality. You would imagine them doing something, then later recall that children in that developmental range don't do that. Given that having to correct your dream manually has it's own "kick" I don't see how that's sustainable.