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)
Shivaji khadake
for stereochemistry you can use Ahluwalia, P S Kalsi, Clayden, jagdamba singh. if you read study chemistry from all of these books then no worry about any concept of steriochemistry. and for thermodynamics you can use atkin as well as physical chemistry by Puri Sharma.