Hello dear

It's all depends upon you  but as my experience say you need other stuffs and material for practice because vit exam consist of all the concepts and a speedy test which can be done if you are well prepared and practice all the concepts thoroughly.

As you can pass the exam with NCERT , but if you really want a good rank you should move towards other books after NCERT like RD Sharma  , cengage, arihant , hc verma, DC pandey, rc Mukherjee etc.

Good luck