LLB

You can look at the option of Faculty of Law, Delhi University. It has the provision of evening classes as well. You have to write an entrance test and after clearing the same you will be able to get admission.

In addition, you may consider faculty of law, Delhi University's evening course if you want to study along with work.

Hello,
You need to think about the field in which you want to make your career and then go for the course related to that field.

Yes, you can do LLB after completing your B.Sc. in biotechnology course. Prepare for CLAT and also for the entrance exams of private college. Some colleges even give admission on merit basis also.
Don't be so stressed out. Complete your biotechnology course with good results and then join LLB in any college.
Kindly, feel free to revert.
All the best.

No, you cannot. LLB is a regular degree course, and you cannot pursue two degree courses together.

CS + LLB is a good combination and LLB is a beneficial course.

Although, LLB cannot be done through distance learning but still you can do LLB from any state university affiliated college along with your job because they consider the pupil's job profiles which do not allow them to attend regular classes thus they waive off the conditions of attending regular classes and you can just appear in exams, while continuing your job.

You should start your CS now and continue with LLB or both after the degree.