Is it really possible though to learn polish in two months? If you're doing it 8 hours per day even?
It depends on how you define "learn Polish". No one on earth can learn to speak Polish fluently in 2 months. But if you try hard you can manage to have quite nice basic conversations after 2 months.
But we should remember that Slavic languages are some of the hardest in the world to learn (after Chinese, Greek etc).