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)
Deb dulal halder Halder
start unit wise ... start with the unit you are most comfortable with... progress should be steady ... and 1 year time is more than enough to crack JRF provided you are systematic and methodical.