Hi jaskirat_ghura,
You've made some really nice progress so far. That having been said, raising a 570 to a 650+ will likely take at least another 2 months of consistent, guided study.
1) Since you just finished the OG16, what study materials are you working with now?
2) When are you planning to apply to Business School?
3) What Schools are you planning to apply to?
4) Going forward, how many hours do you think you can consistently study each week?
GMAT assassins aren't born, they're made,
Rich