Hello Saurabh

You should make a scheduled study plan for your preparation. Time must be devoted to each subject. You can make a time table and allot time according to your daily routine.
Firstly, check the detailed syllabus and exam pattern. You should focus on to strengthen your basic concepts as understanding of the topics is essential. Also, practice previous year question papers and mock tests it helps a lot.
If you are preparing for NEET PG exam, you can go through the link below and check the interview of NEET PG 2018 topper for reference

 https://medicine.careers360.com/articles/neet-pg-2018-topper-how-rachit-agrawal-topped-exam

Good Luck!

Medical PG exams are usually very competitive so you need to make the proper timetable for preparation. You first need to select the harder section from the syllabus and spend more time on it. At least keep 2 months for revision before the exam. Do not study everything and study important chapters or topics. Make notes while studying is important. Make your days separate like how many days you would like to spend on one topic like you can keep 10 days for anatomy, 10 days for physiology, a week for pharmacology, microbiology, opthalmology.

Hope it helps. Good luck with your preparation