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)
Shashi ranjan sinha
From CSIR point of view, you should need to solve as many questions as u can. But firstly solve the previous year questions to get an idea of the questions that are asked