Posted in behaviour/development but thought I may get some perspective from parents of children with asd.
My only worries at the moment are that Ds doesn't respond to his name at all.
He's happy, interactive, claps his hand, ways and points his finger, pretends to talk on my phone (or puts it to his ear at least)
He has good eye contact and smiles a lot, he loves attention off strangers and seeks out eye contact from passers by.
He plays with toys and his sister but is happy to play alone (unless I leave the room and he will follow me)