YOU SAID:
you're weakening aren't you
INTO JAPANESE
あなたは弱体化しているのではないですか
BACK INTO ENGLISH
Aren't you weakened?
INTO JAPANESE
あなたは弱くなっていませんか?
BACK INTO ENGLISH
Are you getting weaker?
INTO JAPANESE
あなたは弱くなっていますか?
BACK INTO ENGLISH
Are you getting weaker?
That didn't even make that much sense in English.