I wonder if he is just an average 3 year old and because she’s not round many she thinks he is more advanced than he is?
My daughter can have conversations, she can memorise parts of books (which is what I think arlo does) and can write her name worn guidance. From what I’ve seen on Instagram etc this isn’t that unusual. He’s probably on the cleverer end of things but not a genius.
Mod edit closing as private account