Confused between 2 month study plan and one month study plan

Hello,
I’ve switched from my gmat prep to gre, because the format was making me anxious. I’m intending on giving my gre in a months time. but I’m not sure how different both the plans are.
what overlap should I pay attention to.

If you have got two months to spare then do the two months plans otherwise if you have less than 2 months than 1 month is the way to go.

is there anything vital in the 2 month plan to incorporate into the one month plan?

The fundamental strategies that you require is covered in both plans but due to the time constraint , only things that are of absolute value are put in 1 month plan.