It's usually best to wait, but in the present case I'd advise you to act without delay.

通常情况下最好是等待，但眼下的情况我倒是建议你立即采取行动。

youdao

Let's start working at once.; Act without delay.

说干就干。

《新英汉大辞典》

Let's start working at once.; Act without delay.

说干就干。

《新英汉大辞典》