Hello Aspirant,

As both of these examination have the basic crux same. If you know the concepts you will be able to solve the papers.

Now what you need to excel these examination is practice , revision and mock tests through which you will be able to analyse your weak areas and would be able to rectify it accordingly.

In addition if you are focusing on NDA 1 and jee I would say not to divert your attention much and focus on limited area so that you can master that. If you will loiter too much then none of the exams would be cracked properly.