IIT JAM is a Joint Admission Test for M.Sc. Aspirants who wants to get Master's degree from IITs or IISc they should apply for it.
It requires self belief, dedication, hard work and attentive mind require.
You want to Prepare for IIT JAM Physics 2019 https://scoop.eduncle.com/iit-jam-physics , firstly you have to know about all details related to its syllabus.
You may create a timetable and give the time to the topics according to their difficulty level.
Do not focus only on important topics prepare for all the topics.
Practice Mock Tests and Previous Year Papers - Mock test is very good to know your weak and strong points. And by solving previous year you will know about which type of questions would be come in exam.
Make short memory cards to help in last minute revision.
Keep calm and don't panic before the exam.