GMAT Strategy

My GMAT exam is scheduled on 27th June,
I have almost two month from now to prepare
my initial mock score from manhattan was 550(Q39,V28)
then i haven't able to study for almost one month due to some family problems.
I have get back to my study now and have finished solving OG12,OG2 quant review for quant ,after going through MGMAT strategy guides.
for verbal i have finished solving OG12 SC question, after going through all e-gmat SC concepts files and my accuracy rate have improved so far.(Thanks to e-gmat SC course)
i will start with CR and RC from these week.
for CR i have e-gmat CR concept files and powerscore CR bible quite confuse which one i should go for
for RC solving passages from official resources thats it and daily reading atleast 2-3 articles,which i am doing from past 1 month.


Sometimes i feel i am forgetting concepts if i am not revising them, especially for quant.
please guys help me in devising my study plan,so i can be in touch with things i have completed ,and also able to start with other sections.

Thanks in advance.

The secret is going to be review. Couple of questions... How much time do you have to study, and what is your target score?

I have 4 hours a day,since i can study 2 hours in office amidst work and 2 hours at home
my target score is 650