Yes, it is possible to crack JIPMER in 2 months of preparation but you need to be dedicated. Study systematically and split your time.
You can use one and a half months for learning what you are not sure of, 2 weeks for working out question papers and learning the related theory to the questions.
Make a note of all formulae. Use the limited time effectively, take breaks in between short bouts of studies.
You need to have good speed. Develop calculation speed by doing more number questions. Don't worry 2 months of effective study can surpass two years of lethargic study. Try to stick to the timetable.