I don’t think my son knows his name

I say his name and he never looks at me, he’s always in his own little world playing or crawling around, he’s very active and just all over the place.

I don’t think he knows his name and I just can’t get him To sit still long enough to teach him. I feel like I can’t get him to learn anything bc of this. He smiles at everyone, crawls, laughs plays, goos and gahs. But he doesn’t associate me as mom or what his toys are either. Anyone else have this problem? Or can give me some advice?