如果你不能准时到达那里，请尽早打电话。

If you can't get there on time, make a call as early as possible.

youdao

请尽早答复。

Please reply at your earliest convenience.

《新英汉大辞典》

请尽早做出决定，不然你会坐失良机。

Please make up your mind / make your decision as early as possible / you can, or you’ll miss the good / golden chance / opportunity.

youdao