What are the common challenges faced during CSIR NET Mathematical Sciences paper III preparation?

What are the typical challenges that candidates encounter while preparing for the Council of Scientific and Industrial Research National Eligibility Test (CSIR NET) Mathematical Sciences Paper III? I am interested in gaining a comprehensive understanding of the common difficulties faced by candidates as they navigate the preparation process for this specific paper. Additionally, could you share insights into effective strategies, resources, or support mechanisms that can help candidates overcome these challenges and perform optimally in CSIR NET Mathematical Sciences Paper III?