Hello R: Given that the student can speak and write at approximately the same level you show here, it requires about a year to achieve what I refer to as a "fluency". If the student is prepared to engage in Guided Reading of a common text with me, Fluency can be achieved faster. It does require that the student be dedicated to study on their own. A few hours of casual chat with a Native English Speaker aren't going to be very useful if the student is unwilling to study the materials introduced in Chat.

I suggest that you take a course in your city

The most effective way to learn a new language and to do it the fastest is to be in the country native to the language you want to learn to speak. If you can spend time in the UK or in America your speaking skills will improve the best way they can ; )