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)
Dinesh khalmaniya 1
https://drive.google.com/file/d/1RlbWEwcNkEe04rYCJOdTRF6D_FM5iEtI/view?usp=drivesdk
these notes are awesome