Hi tp9320,
Raising a 550 to a 650+ will likely require at least another 2 months of consistent, guided study - and you might have to make significant improvements to how you handle BOTH the Quant and Verbal sections. Thankfully, the GMAT is a consistent, predictable Exam, so you CAN train to score at a higher level. That having been said, if you're feeling 'burned out' by your prior studies, then you should probably take some 'time off.' It does not have to be that long - the length of your break is up to you - but to earn a Score at that higher level, you will need to be ready to put in the necessary time and effort and learn/practice the proper Tactics. Attempting to train while feeling exhausted would probably hinder your progress.
Before I can offer you the specific advice that you’re looking for, it would help if you could provide a bit more information on how you've been studying:
1) How long have you studied?
2) What study materials have you used so far?
3) How have you scored on EACH of your CATs (including the Quant and Verbal Scaled Scores for EACH)?
4) What were the Quant and Verbal Scaled Scores for your Official 550?
GMAT assassins aren't born, they're made,
Rich