This is very short time to be well prepared for the exam. To get a good score in 10th board you should study atleast 5 to 6 hours in a day with the quality of study. Here are some preparation tips you can follow.

Make your time table & devide your time in two way first your daily routine & second your study schedule in which the time should be divided subject wise & topic wise as it will help you to cover all the syllabus.

You should focus on to clear your concepts and to build your fundamentals strong. You can easily score good marks if your basics is strong.

Make your own notes & note down the important things as it will help you at the time of revision.

After completing one chapter do revision again to make it strong.

Do practise as much you can it will also help you to analyze your weak areas.

Good Luck!