live off [phrasal verb]

live off (something or someone)

: to use (someone or something) as a source of the money or other things you need to live

• He has been living off his inheritance.

• He has been living off his girlfriend. [=his girlfriend has been supporting him financially]

《韦氏高级》

You 主语 can't live off 及物短语动词 your parents 宾语 your whole life 时间状语.