A little more; slightly more or a little longer. Used to request a small increase, extra time, or to indicate something is almost complete.
もう少しで駅に着きます。少し待ってください。
We'll arrive at the station in a moment. Please wait a little longer.
この作文、もう少し詳しく書いたほうがいいよ。
You should write this essay a bit more in detail.
もう少し考えさせてください。すぐ返事はできません。
Please let me think a little more. I can't reply immediately.
もう少しで合格ラインだったのに、残念だ。
I was just a bit short of the passing mark — what a pity.