Yes I meant MathReview document by Eric.I found it very helpful for last moment review.I wrote my additional notes on that document

.
Thanks Eric.
Yes I feel that SC and CR in test are of same level as OG questions towards the end, but they are not OG questions.SO you won't have seen the questions earlier.
So you need to recognize the patterns well and remember the rules.
Practice a lot.
I would suggest Powerscore CR Bilble if you have problems with CR.I have high regards for this book.It helped me a lot.
For SC know MGMAT SC rules by heart.
Go through Sahil's notes and after doing so.practice,practice and practice
I feel you can make a lot of difference in the time you have in hand,but that depends on where you stand now and whether you are clear on what you need to work on..