It took my son a while to be affectionate. He had so much energy it was hard for him to sit still and be affectionate. Sometime between 1 and 1 1/2 I feel like it clicked for him. Started with hugs and short snuggle sessions on the couch. Now he’ll crawl into laps for snuggles, give kisses. But it was a concern of ours for a while that he wasn’t affectionate.