Girls, yesterday I wrote that my son gets up lying on his back. Today …

Girls, yesterday I wrote that my son gets up lying on his back. Today the husband held him by the hands (didn't pull) and he was getting up. In the end he sat down. He lets go of his hands and cries, wants to sit. I am in shock. He still can't turn over from his back to his stomach, and he is already trying to get up. Is this normal?