Hello STudent

Doing all preparation within one month which you have planned to do is possible if you do it with hard labour with a systematic study routine and have a gap of leisure time everyday also. Specifically this one month is for revision and do practice the mock test everyday if it is possible twice a day. It will help you to  maintain that allotted time for every questions in the exam. Revise all of the subjects in a systematic way and have a brush up for all the course part by part in a a day for every day routine of study and practice.

Hope this helps.