Law

No, LLB Is a full course, as it requires a regular need to study and lectures. So, LLB cannot be done in part time.

It doesn't matter from which university you have done your graduation. You can take admission in law regardless of the same. If you want to take admission in law you first need to decide which university you wish to take admission in. There are a lot of universities all over India, which provide the same. The next what you need to is to visit the website of the university and check for every instruction which you need to follow in order to apply for law in the same.

There is one university or rather college I know in which provides direct admission is offered based on class 12th marks. It is Government Law College. Mumbai. For further details, you should go and visit their website.

After completing class 12th, you need to fill up the forms for entrance or admissions to the university which provides law degree. Here are some:
National Law University
Indraprastha University
Chaudhary Charan Singh University
Government Law College Mumbai etc. NLU, IPU etc. They take entrance. The other universities release their cut off lists. So, you need to comply with the procedure of the university you wish to apply into
Also, what you can do is you can first complete your graduation and then apply for law which would be a three year span degree. Otherwise it will be five year one.

https://www.shiksha.com/mba/cat-exam-syllabus
Visiting the given link would give you a good idea about the syllabus of an important exam named CAT.

You can refer to the following link to get detailed information about detailed information about admission methods for B.A. LL.B. in Punjab University. https://www.shiksha.com/university/pu-panjab-university/pu-uglaw-exam.

45% is the requisite to sit in any exam. Appear into competitive exam and work hard. You can also approach private universities and CCSU, otherwise give improvement.

Reservations are blessings, I have seen students getting admission with such a low score.