You can use Gmat Powerscore CR
Bible for your CR.If you still find struggling with few specific topics you can refer Powerscore LSAT CR
bible.This is "THE book" for CR- It covers all topic with depth and has some good problem sets.However i would not suggest it if you do not have time.Just use it to go through topics which you are struggling and feel need for more material to clear any particular concept. These should make you completely fit to face CR problems.For parctice you can go with OG questions .They are the best!!
Please click Kudos ,if my post helped you