Need Help to go from 650 to 700

Hi Guys,

I've scheduled my test for 14th Sept. Below are my scores -

Kaplan diagnostic - 670
Kaplan CAT 1 - 650 (Q48 V32)
GMAT Prep 1 - 650 (Q47 V33) -- this was very disappointing!

I'm aiming for 730. Under normal conditions I nail math problems but I'm getting easy ones wrong and this makes me deflated and I screw up verbal too.
I also haven't started looking into AWA and integrated reasoning.

Any advise will be greatly appreciated!