I believe there is no other way than 'imitation' that could improve your spoken English, whether it is large vocabulary or small, or whether is it two months or more. (It rhymes, LOL) American and English movies, TV series, etc.

Hello Cuici, To improve your spoken English in a shorter time you have to intensify your efforts and dedicate more time to listening and speaking English. In a short term mingling with native speakers whether in real or online and having conversations and small talks will help you become a little fluent and enables you to learn more expressions used in daily conversations. A real tangible improvement in your speech is usually not possible in such a short period of time. Some practices and methods need more time to have an impact on your speaking skills such as: - Reading and acquiring more vocabulary through memorizing new words and expressions,writing them and using them in sentences you speak after wards. - Listening a lot to English language through any media ,whether movies, music..etc. - Speaking with natives and attending activities performed in English language. So in the short term you can just learn some conversational skills to allow you to have some small talks ,but 2 months are not enough to acquire lots of vocabulary and expression modes that could cause remarkable progress in your level.

@Joseph , was that an intended rhyme or did it come out of the blue ?;)

说英语。。。 就是那么简单