Firstly calm down and focus on your notes, just revise them widely and solve many mock test as you can and after solving mock test just analyse your results and see which is your weeker section and Focus on that, Don't loose confidence but focus on the things which you can do in better way
Hope you find this informative
Now that you have only one month left for your exam,
Just focus more on problem solving now(mock tests maybe) without looking for the solution.
Do not get tensed if you get less marks in tests.
Try solving as many as previous years papers as possible including the time limit.After solving the paper analyse the mistakes which you are often making.
And at last do not feel nervous, remember hard work never fails!