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)
Ruby negi
you can do all these from previous year papers. u can find all these in eduncle site..
last 5years pyq of jam, jest and tifr are more than enough..