Are you about time to sleep

[Xinfu]

Hi, A and B are brothers living in the same room. A sleeps earlier than B, but B doesn't want to disturb A by turning on the light at work, so B tries to synchronise his sleeping time with A's. When B wants to know whether A has the intention of sleeping/go to bed, how should he phrase the question?

1.Are you about time to sleep?

2.Do you want to sleep?

Are they idiomatic?

Are there other ways of expressing the same meaning?

[Rusty]

Number 1 is not an option, as the question isn't phrased correctly.
It should be "Is it about time to sleep?"
Number 2 isn't quite right, either.
B could ask, "Do you want to sleep now?" or "Are you going to sleep now?"

There's nothing idiomatic about the phrasing used.

"Are you ready to sleep now?"
"Are you ready to go to bed now?"
"Are you ready to head for bed now?"
"Are you sleepy yet/now?"
"Are you tired (yet)?"
"Are you thinking of sleeping yet?"

Idiomatic and slang usages:
"Time to hit the hay?"
"Time to hit the sack?"
"Time to call it a day?"
"Ready to turn in?"
"You pooped yet?"

[Xinfu]

Number 1 is not an option, as the question isn't phrased correctly.
It should be "Is it about time to sleep?"
Number 2 isn't quite right, either.
B could ask, "Do you want to sleep now?" or "Are you going to sleep now?"

There's nothing idiomatic about the phrasing used.

"Are you ready to sleep now?"
"Are you ready to go to bed now?"
"Are you ready to head for bed now?"
"Are you sleepy yet/now?"
"Are you tired (yet)?"
"Are you thinking of sleeping yet?"

Idiomatic and slang usages:
"Time to hit the hay?"
"Time to hit the sack?"
"Time to call it a day?"
"Ready to turn in?"
"You pooped yet?"
Thank you, Rusty~