너도 ~할 때가 된 거 같지 않니?
It might be time for you to start ~ing.
It might be time for you to start dyeing.
너 염색할 때가 된거같지 않니?
It might be time for you to start losing some weight.
너 살 뺄때가 된거같지 않니?
It might be time for you to start stop smoking ciggarette.
너 금연할 때가 된거같지 않니?