Last question first: I'm not sure whether data will paste properly in the thread - I think you'd have to type in any data you want me to have. (But, ideally, it won't be a ton...if you've analyzed it well. :)
Yes, you've got a timing issue: you're sacrificing DS in order to spend too long on PS problems that you're getting wrong anyway. The first task is just to be aware of this so that you are less tempted to go over on PS in the future. Start cutting yourself off.
Next, you're actually doing better on DS even with less time! That means:
(1) DS is a strength. Take advantage of that. Don't rush and open yourself up to careless mistakes on strengths.
(2) You are stronger with the math theory / rules / knowledge, but are struggling more with the actual computation.
For #2, there are two levels of things to practice. The first is the fundamentals: the kinds of things that show up in our Foundations of Math book (how to translate story problems, how to manipulate equations, exponent and root rules, moving between fractions, decimals, and percents, and so on). If you have any weaknesses in those areas, start doing some drills to get your computation skills up to speed.
The second is alternative solution methods: things that work on standardized tests but that you didn't learn in school math classes. Things like this:
https://www.manhattangmat.com/blog/inde ... er-part-1/and this:
http://www.manhattangmat.com/blog/index ... ms-part-1/If you have access to our GMAT Navigator program, look up our solutions to OG problems. We'll show you the most efficient way. :)
SC - yes, going too fast can be just as problematic! You're much more likely to make careless mistakes. Use this to help you develop a consistent SC process - not too slow but not too fast either:
http://tinyurl.com/scprocessRe #2 vs. #3, anything that is long AND wrong should go in #3. Even if you think you could learn it eventually, you shouldn't start with it now. Come back to it later, if and when you have time.
Anything that is much too long (1m+ over the average) should go into #3 and be given the "get these wrong fast in future" treatment -
even if you have been getting them right. You need so long to get them right that it isn't worth it. (And, really, if you're taking that long, you give yourself so many chances to make a mistake that you can't be confident you'll always get it right.)
Also, if you got something wrong but it was 700+, that goes in bucket 3. At this point, you need to make sure you can get the sub-700 stuff, not that stuff above.
Okay, for the #2 topics you list:
Exponents: If you have our Foundations of Math book, start there. Make sure you know the rules and how to manipulate these. Drill yourself till you know them backwards and forwards. If you don't have that book, google "exponent and root drills." Lots of teachers post worksheets online.
When you're ready, go to the main Algebra strategy guide and make sure you can do the material in the exponents and roots chapters. Then test yourself on OG questions and, if you have Navigator access, check our solutions. Also, start analyzing OG problems using this:
http://tinyurl.com/2ndlevelofgmatPolygons - do you know the rules? Or is that part fine and you're struggling with how to apply to GMAT-format problems? If the former, study our Foundations of Math material. If the latter, start analyzing OG problems using the 2nd Level article.
RC and CR: you've listed inference / draw a conclusion for both. Start with the question type you think you're better at (RC or CR), learn inference, then go back and learn it for the other one.
Here are strategies:
RC:
https://www.manhattangmat.com/blog/inde ... rehension/CR:
https://www.manhattangmat.com/blog/inde ... reasoning/Evaluate questions are hard enough that you can blow those off for now. Add them back in later if you have time (and if you still need it).
For SC modifiers, try this:
http://www.manhattangmat.com/blog/index ... orrection/I'm less concerned about idioms because they have reduced the incidence of "one-off" idioms on the test, and that's usually where people struggle. They do still definitely test idioms that have to do with parallelism (eg, either X or Y) or comparisons (eg, X more than Y), so if you're struggling with those, start making flash cards. If you have our SC strategy guide, take a look at the asterisked idioms in the Idioms chapter. (Only the ones with asterisks.)
Take a look through the above and let me know what you think.