Hello shasara,
It depends on how the time studying was spent and whether or not you've taken enough practice tests. It's very important to find the right balance between reviewing relevant content areas and also practicing questions and incorporating question strategies that work for you. I would definitely use the OG as you did, and also be sure to review the questions you missed from there and why. But also don't forget to make use of the assortment of materials that are available online, including the questions in this forum. It seems you should focus on Verbal and Quantitative sections equally to start. I can't unfortunately provide more specifics without knowing more about the sections and question types that you missed in the most recent exam.
I hope that helps. Don't give up!