He didn't kick too much
A few days ago my daughter, who is expecting her third child, was telling the other two children that this baby is kicking alot. She further explained that when she had the first one, Mikey, he didn't kick too much. Mikey gently said to his mother "Mom, do you know why I didn't kick you too much? Because I knew you were my Mommy".
Out of the mouths of our sweet babes.