YOU SAID:

I'd could'nt rather stay awake while im asleep.

INTO JAPANESE

寝ている間は起きていられない

BACK INTO ENGLISH

I can't stay awake while I'm asleep.

INTO JAPANESE

眠っている間は眠れない。

BACK INTO ENGLISH

I can't sleep while I'm asleep.

INTO JAPANESE

寝ている間は眠れない。

BACK INTO ENGLISH

I can't sleep while I'm asleep.