Any idea ?

Hello my baby is 1 year old. He can focus on items like cable or chair buckle about 20 mins at one time. But not his toys. When he focus, no matter what we do, call his name, touch him he doesnt really bother just focusing on the item that he’s playing. I read about normal child’s attention span is quite short. I’m just worried autism related. If he’s focusing, he can response to his name as per normal. Thanks a bunch :)