时间过得很快，不知不觉三个月过去了。

Time passed quickly, and three months went by before we knew it.

youdao

过去的三个月真受罪。

The last three months have been hell.

《牛津词典》

仅在过去的三个月里，亚马逊就发布了1000多本关于幸福的书籍，包括《快乐的钱》、《为所有人打造的幸福灵药》等，对于刚刚入门的人来说，还有《快乐初学者》。

In the last three months alone, over 1,000 books on happiness were released on Amazon, including Happy Money, Happy-People-Pills For All, and, for those just starting out, Happiness for Beginners.

youdao

I think for the past three months, I've only had five or six hours of sleep at night.

我觉得在过去三个月里，每晚我就睡5到6个小时。

I need 实战 - SpeakingMax英语口语达人