Hi dutchmen991,
The data that you've provided is somewhat limited, so I'm forced to offer some general suggestions (and I have a few questions).
First, do you have any flexibility to push your Test Date back (even for just a few weeks or a month)? While you might not *want* to do it, the extra study time could make a big difference in your overall performance.
These 3 CAT scores are all from within 1 week of activity, so even though there's a slight progression/improvement, there's no real evidence that you're truly performing at a consistently higher level yet. These scores are "clustered" around the low-600s, so I have to work under the assumption that THAT is your current scoring level.
Did you take each CAT in its ENTIRETY (including the Essay and IR sections)? If you did NOT, then these scores are unrealistic (and likely "inflated").
You mentioned that you worked with a tutor. Has that tutor offered any advice about what you should be doing with these last 2 weeks?
If you do decide to stick with your current Test Date, then I'd suggest you NOT take too many practice CATs during the remaining 2 weeks (2 or 3 more CATs total should be it). The bulk of your time should be spent on additional practice and review. And as I mentioned earlier, you should consider paying the $50 and pushing back your Test Date.
GMAT assassins aren't born, they're made,
Rich