Grandma I Don't Want to Go to Sleep by Richard Ceasor

Missus 3D introduces a book reading session featuring 'Grandma, I Don't Want to Go to Sleep' by Richard Caesar. The story follows a child's imaginative adventures in the ocean and the importance of sleep for growth. The session concludes with an invitation to join the next reading.

What is the significance of sleep according to the story?

What message do you think the author is trying to convey about bedtime?