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)
Deepak singh 1
you can also try to solve problems from different coaching institute's problems .. their questions are tricky and helpful like eduncle , career endeavour , dips , praveen chikra etc...
how to get those..?
available on internet .. https://careerendeavour.in/iit-jam-test-series/
some coaching website gives free assignment , online test series and questions, search on google once .