Although I don't wish to encourage such practices but looking to the circumstances (IF anyone dont have time) I advise you as under :
1. Go to index part of the book.
2. Refer the main headings (just read heading only)
3. Whatever you know; don't touch and go ahead.
4. When you don't know anything about sub-heading, open the page number given against the sub-heading.
5. Read only two lines thereof and come back to index.
6. Continue the above procedure.
7. Hope within 6 hours you would be able to cover major portion of syllabus.
8. You may select only those chapters; where you know something about it (it will give some confidence).
By one of our great member of CCI CA SURENDER KUMAR RAKHECHA