Shaking head to say no

At 8 months old, is this normal?

And it's pretty obvious he means no, like when I go to give him a spoon of food when his full, he shakes his head no for a couple seconds and stops to look at me, if I try again he does it again, does the same if I give him a toy his bored of, shakes his head no and throws it or pushes it away.

This is my second and my first wasn't doing that this early

I was just asking if it's normal because my first child was very advanced physically very early, his recently been diagnosed with autism and was told that could have been one of the early signs, so I guess I'm just more aware of things 😅