GMAT Strategy

I have signed up for the 60 day GMAT study plan and so as per the schedule for day 22 I retook the GMAT Prep Test1. This time my score went down from the first time I took the test and the reason was that i could not complete the test in time and 11 questions went unanswered. Although my accuracy has improved considerably in Quant over the last 20 days, but my timing has gone for a toss.

Please help me some ways in which i can practice timing so that i cna complete my test in time.
If there are any additional tests that I should to take then please suggest which ones i should take.

I am really worried now since my exam is on the 22nd August and very less time is left now.
Please help!!

I'd have Benchmarks in front of your computer as you take EVERY practice CAT from now on. That way you can check in as you go and guess as necessary to "catch up" to where you should be. It may not be possible for you to finish all the questions within the timing. It's MUCH better to guess on several questions spread out throughout a section than leave a string of unanswered (or incorrect) questions at the very end of the section. Here's some benchmarks I'd recommend to get you started.

You should also be doing pacing drills in between your practice CATs to give you some pacing pressure. For example, 10 SC's in 20 minutes, 1 long RC passage with 5 questions in 12 minutes. Don't make pacing something that only comes up during your practice CATs.