Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Dr suman 1
Get an idea after looking at previous year JAM question papers and write down important topics that are covered the most. Clear your basics and try to solve as many question papers as you can, without looking at the hints/answers provided below the questions until you really need their help.