hi akanksha, sorry to inform you, you cannot apply for any 3 year course in national law universities, however there are various private university who offers the same. you can visit https://dqxeclau.top/application-forms/colleges/?stream=Law for more details, 

best of luck!

Hi, No, you can not apply for LLB in NLU's after completing BA because NLU have law courses to be applied after 12th class and not graduation. Also there is age criteria that is maximum 20 years to apply in NLU's. Hope this helps you.