Gave CAT twice ! Can share few pointers :
-Revise basic maths topics like Algebra/Geometry and Arithmetic.
-Start Giving 1 Mock test every weekend, and do analyse each and every question, even if you score very less in mock doesn’t matter. Give mock very seriously like you are giving actual CAT.
-Read one newspaper every day for like 30mins. The Hindu can help
-Read articles of different domain like art/psychology/History/Sociology etc once in while
-Read business articles daily, can start with business newspaper as well.
You have sufficient to prepare for CAT, u can start with the above steps and follow it for around 2 months. After 2 months you would have given around 7 mocks and if you have followed the above process seriously then you would be in a much better position to gauge your progress and make plan for next 3 months.