I am going to go to sleep already.
I am going to go to sleep now.
I am going to sleep already.
I am going to sleep soon.
I am going to go to sleep now.
I'm going to bed.
I feel like I am going to sleep on the floor.
I am going to sleep soon.
I'm going to bed.
もう寝なきゃ。
I'm ready for bed.
You must keep awake.
I choose to sleep.
I was going to bed.
I am just about to go to bed now.
He is sound asleep―fast asleep.
am/are/is sleeping