Practice test scores:
where those retakes? if not, I would suggest taking the exam again in 30 days since you scored 100+ points less than the official practice exams.
I would go over the basics and make sure you master them. Also, I would work on timing and accuracy. Use OG-12 and a stopwatch and do 10-20 problems at a time. After you finish the problems (within your goal time... <2min and <1.75 min for quant verbal respectively), compare your solutions to the solutions that the OG provides. Try to identify either areas where you are carrying out redundant/unnecessary calculations (i.e., short cuts) or problems where you consistently make mistakes (e.g., not reading the problem correctly). remember, it's important to practice under time constraints.
I am honestly thinking about starting from scratch and re-reading all the Manhattan GMAT books
again and trying to master the material. I suspect I am lacking a solid foundation in the quant fundamentals and verbal fundamentals.
Do you think 30 days is enough to start from the beginning?
Regarding the Practice Tests:
Actually I left off some info, I also took some Knewton tests:
Knewton 1 (diagnostic): 510
Knewton 2 (after some months of studying): 590
Then I started doing timed questions and scored:
GMATPrep1 (second time):690
you mentioned scaterred studying... when were the prep tests taken?
I think the key is to study consistently for about 2-3 months and take the exam. I understand that life gets in the way but it is the one trait all 700 scorers have in common.
The prep tests were taken in the final 3-4 weeks before the exam. Right now I'm not sure how much time to give myself to dedicate to relearning everything before I schedule another test date?
Is it wise to try to get a test date before the June 5 test change? I don't want to learn a whole new section...