It's important to get things done ahead of time rather than waiting until the last minute.
You shouldn't wait until the very end to finish your work. You should try to finish everything in advance.
ーIt's important to get things done ahead of time rather than waiting until the last minute.
「ギリギリまで待たずに前もって終わらせるのが大切だよ。」
get ... done で「…を済ませる・終わらせる」
ahead of time で「前もって・あらかじめ」
wait until the last minute で「ギリギリまで待つ」
ーYou shouldn't wait until the very end to finish your work. You should try to finish everything in advance.
「宿題を終わらせるのに最後の最後まで待たないの。前もって全部終わらせるようにしなさい。」
wait until the very end 「最後の最後まで待つ」
in advance で「前もって」
ご参考まで!