How long does it take to prepare for GRE?

[modernecho]

Hi folks,

I'm an international student interested in pursuing PhD in English and American literature. I will be applying for 2018-19. Is there any specific way to prepare for GRE? There are sample questions that I've been looking at. I still have confusion regarding the pattern of test. I've few questions:

1. As a student who is applying for PhD in English lit. should my scores be good in all 3 sections i.e. verbal, quantitative and analytical? Do I've to attempt all 3 sections? I'm really not good at Math!

2. Do I've to take general and subject test on the same day? 

3. How long does it take to get the scores? 

4. Is there a provision at the time of registering for the test to include the name of institutes you've been applying at?

Any other tips/advice/info regarding the test is welcome. Thanks!