Hii Roopa!
Frankly speaking, studying law in hindi medium is not a good choice. You should be doing LLB in English medium itself. This will help you in future and give you more Opportunities to improve the career. Moreover, I haven't yet heard of any University or College providing law course in hindi. And, the most important thing, even if you feel you are not good in English, the 5 year course, will give you ample time to enhance your English language and you will be good at it. Don't worry.
Hope this helps.
Good luck!