Hi svishnu1994gmailcom,
I'd like to know a bit more about how you took this CAT:
1) What were the Quant and Verbal Scaled Scores?
2) Did you take the ENTIRE CAT (including the Essay and IR sections)?
3) Did you take it at home?
4) Did you take it at the same time of day as your Official GMAT?
5) Did you do ANYTHING during this CAT that you couldn't do on Test Day (pause the CAT, skip sections, take longer breaks, etc.)?
6) Did you ever take this CAT before? Had you seen any of the questions BEFORE?
Raising a 610 to a 720+ in one month might be too difficult of a goal to be considered realistic. You will likely need at least another 2 months of consistent, guided study to get up to that level. As such, you might want to consider pushing back your Test Date.
GMAT assassins aren't born, they're made,
Rich