YOU SAID:
i am about to seriously fall asleep
INTO JAPANESE
私は真剣に眠りについています
BACK INTO ENGLISH
I am seriously asleep
INTO JAPANESE
私は真剣に眠っている
BACK INTO ENGLISH
I am sleeping seriously.
INTO JAPANESE
私は真剣に眠っている。
BACK INTO ENGLISH
I am sleeping seriously.
That didn't even make that much sense in English.