What is the best and quickest way to learn japanese and become fluent?

hey i need to learn japanese quickly and i need to learn it in 2-3 years cause I would like to attend a japanese high school. My mother would allow me to if i can learn japanese by then. What would you recommend to learn japanese fluently or at least in level where you can speak it well enough to communicate in a school by 2-3 years?

By: aketetsu

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