Hardcore preparation for 1350+ M and CR?

<p>Hey everyone. </p>

<p>I'm an international student who's aspiring to achieve 1350+ on the SAT's math and critical reading. I was quite perplexed in chosing the adequate method to prepare . Unsuprisingly I ended up preparing in an utterly wrong manner.</p>

<p>I started out in December by doing simple math revision (in English) and reading vocab novels on Sparknotes. I did not buy the Official Guide. I ended up studying Barron's ridiculous math excersises and practice tests. Eventually I had the audacity to attempt the offiical practice test. The results weren't delectable - I excelled in CR (just a few mistakes on long reading passages here and there) but failed on math.</p>

<p>I stumbled upon this site and read Xiggi's guide which was extremely helpful :) The issue is that I lost too much time , way too much time. I'm perspicacious enough to sense my debacle on the 28th Jan SAT , but my last shot is on the institutional SAT (ran by the university I'm going to apply to) on 24th February.</p>

<p>My question is how can I improve my scores given that I have 7-10 hours to study daily (yup , I haven't got anything better to do) and my Official Study Guide book will arrive prior to 25th January?</p>