Champion tells Via Zo is his daddy:
It’s too early for Vai to be speaking – much less for him to recognize you and Zo as his parents – but nonetheless, there’s never a ‘wrong’ time to speak with your kid. And maybe you should look into getting a book or two so you can read it to him young. You say a handful of silly, pedantic-but-engaging-for-a-child nothings, such as his name, and that you’re his daddy, and that Zo is his daddy, and that he’s your son.