Too stoned to math

So traveling to another star or galaxy is still YEARS at light speed. But at a certain speed past light speed, theoretically, time actually goes backwards. Shouldnt there be a middle? Like, If I went at just the perfect speed in the middle, would that theoretically freeze time? So rather than altering a timeline or people getting older, you froze it as if you teleported, there in seemingly an instant, yet to you it was still a LONG trip.