The entrance test of BBA in IPU is not very tough. If you have good conceptual clarity, you’ll manage to get a rank below 4000.

But, the problem is getting a good college. Apart from the top 5–6 colleges, rest of them have average level of academics.

So basically you need to get a rank preferably under 2000, to secure admission in one the top 3 colleges in IPU.

Start preparing for the exam using Arihant BBA guide or any other which you find useful.

Tips:

1.) Focus more on your strengths and try to score maximum in that section.
2.) If you’re not good at maths, at least revise the basic concepts from study guides. You may also search for videos on youtube. But don’t ignore it ! 
3.) Practice at least 3–4 mock tests from Arihant guide or any other source. Trust me, it would help you a lot in the entrance test.

For du jat No, it isn't. It requires management of time and structured preparation. Students who are able to continue with the studies after the board examinations are over do really well in JAT.