Well, I personally play through it once, if I feel like it's at a level where I can FC (like I can stream fast enough and the jumps aren't too hectic for me), then I'll keep trying over and over because if I can do it then it's just a matter of time until it happens. However, if the song is outside my reach (massive streams, AR10, etc), then I'll hold off and play it maybe once a day to see if I'm getting any better at it.