It's time for bed.
I'm not ready to go to sleep. I'm not tired.
It's quite late, and you have an early day tomorrow.
I'm not going to be able to fall asleep.
Why don't you try counting sheep?
I've tried that before. It really doesn't work.
That's beside the point, you still need to go to bed.
Why can't I just stay up until I fall asleep?
If I let you do that, then you're just going to be up all night.
I promise I'll go to sleep soon.
No, you're going to sleep now, so good night.
See you in the morning.