YOU SAID:

We are having a sleepover

INTO JAPANESE

私たちは眠りについている

BACK INTO ENGLISH

We are about to fall asleep

INTO JAPANESE

私たちは眠りについています

BACK INTO ENGLISH

We are asleep

INTO JAPANESE

私たちは眠っている

BACK INTO ENGLISH

We are sleeping

INTO JAPANESE

私たちは寝ている

BACK INTO ENGLISH

We are sleeping