Interpreting these scores

About 2.5 weeks, quant killed me on the latest Knewton (37Q, 42V)

Ah, so you're still in the early phase of your studies. At this level, I wouldn't worry too much about the numbers just yet. You have a starting point (580) and a target score. The next step is to focus on your studies, which should consist of reliable guidebooks and the OG.

What guidebooks are you using? How long do you plan on studying?

I have MGMAT's Foundations of GMAT Math and Knewton plus access to the GMAT Club Tests, I plan to study until mid to early May, I get out of school that first week in May, so the last 2 or 3 weeks will be full time. My verbal isn't a concern at this point since I'm routinely getting in the 40s on it, but my best quant is a 37, any suggestions beyond what I have now?

If math is your weakness, then the Manhattan math series very helpful. Another option is the Kaplan Math Workbook. Before attempting the GMATClub tests, try to complete the OG books. When you're ready for the GMATClub tests, I found it less stressful to treat them as a source for practice problems rather than as practice tests.

And this leads me to another issue. It seems - and I may be mistaken here - that you plan to rely on a good bit of practice tests for your overall preparation. If I'm correct, then a word of caution: practice tests are important, but please don't let them consume too much time from reviewing guidebooks or problem practice.

I hope our dialogue was helpful!