Be prepared with the study material which you are referring. Practice as much as you can from the Kiran's publication.
Study for 6 hours a day for preparation of SSC CGL.Your timetable should be very simple. 2 hours for Mathematics are enough and 1 and a half for English. An hour for Reasoning is sufficient.
Study History and Polity together but complete History first. This will make Polity easy. For Economics and Current affairs, You can use the help of YouTube. Study Geography by making Diagram.
The SSC CGL preparation and paper attempting tips should be helpful in the exam.