Not sure if my child is ready for kindergarten !?

Megan

So he has been excited for kindergarten all summer. Now it starts tomorrow and he’s been crying all day because he’s scared. He will be 4 going into school but turns 5 October. My husband didn’t bother to address his concerns until we got him enrolled and school clothes. Now he’s making me feel guilty for encouraging school. He doesn’t think he’s ready even though he meets most of the benchmarks. He’s very clingy to us. Husband is worried about sports mostly. And getting this like a car later than others because he graduated at 17. I graduated at 19 and I disliked being so much older than everyone in my grade that I had no friends. So I don’t know if we are just going to let him go for a few weeks and see how it goes. Unsure if he doesn’t do well if we would or should pull him out of school until next year or what?! Any advice? School starts tomorrow morning..