I'm a bit concerned about my babies behaviour. He twists his hands on his wrists constantly. He smiles, babbles and laughs. He's just started saying 'mamamamama'. But he doesn't particularly smile at me when I smile at him. He'll smile more so if I'm playing (like peekaboo) throwing him up and down (gently) etc. He keeps staring at lights and twisting his wrists but I noticed the other babies and playgroup don't do this.
He also does this growling noise when he's excited. He does give eye contact but not for long. Do you think it sounds like he may have autism or just a typical baby? I know he's still young to be able to properly tell but I'm so worried about it.