Try to solve all previous year questions of CSIR-NET and GATE exam. By doing this, you will get an idea about the important and scoring topics of CSIR-NET. Also during the Study of any study materials, prepare your own short/quick revision notes(of 3 or 4pages) on each topic, So that at the time of examination you may do a quick revision.
Now, stop reading books and start solving problems of previous year CSIR-NET exams. Also, analyze yourself that in which topics you can gain marks easily, and make them stronger.
Not only read theory & solve problems but also make a strategy for the exam a/c to your strong points & preparation.
Keep in mind that, it is not necessary to solve all problems in an exam, your guessing power should also be strong which comes by solving a lot of problems. So that you can easily discard the wrong options and can identify correct options.
Numerical Analysis, Dynamical System & Markov Chain: These are easy and scoring topics for NET. So complete them first. You may practice and solve all problems of NET from these topics within about 1 day.
Note: All the above mentioned topics may be practiced and solved in a maximum of 2 or 3 days.
Important Topics and Marks weightage for Upcoming CSIR NET Exam
Also, during study/practice make a chart of important key points for quick revision in the last days of preparation. Here is a sample (Sample PDF download).
CSIR-NET Cut off analysis and setting up the target for You