そろそろ寝ます。
I am going to sleep now.
I think I may go to sleep soon.
もう寝ます
I have to go to sleep.
I am going to go to sleep now.
寝てなさい。
am/are/is sleeping
I am going to go to sleep now.
私は、そろそろ寝ます。
I am going to sleep soon.
They are all in bed.
もう寝るときだ。
It is time to go to bed.
I am going to go to sleep very soon.
I've got to get to sleep soon.
I am sleepy so I will go to sleep soon.