CLAT

Pursue the 3 year LL.B. course from any private institution. That will serve the purpose. No need to appear in the competitive exam.

Important preparation tips for the CLAT exam are mentioned at the link provided below. You can apply these tips even with just one month left till exam day. If correctly applied, it can bring about a remarkable improvement in your score and performance in CLAT. https://www.shiksha.com/law/articles/how-to-prepare-for-clat-2017-blogId-11917.

The Faculty of Law of AMU is presently running 5 year B.A. LL.B. (Integrated) Course. Candidates must be passed in Qualifying Examination Senior Secondary School Certificate or an equivalent examination with aggregate not less than 50% of the total marks. Or Bridge Course (for Graduates of Deeni Madaris) from AMU with 50% marks in aggregate. The selection procedure is based on Admission Test which is conducted by AMU.

I guess, you are referring to missing the last date of CLAT form because CLAT is on 13th May. I think you should try Bhartiya vidya peeth, UPES, ICFAI if you missed CLAT form.

The fee structure is around 40-60k INR.
This is the general fee in our MP region .
It may differ from the place or the level of coaching given.

Yes, but in Maharashtra, it is not compulsory. Here "MH-CET law exam" is needed.

Fill the online application available on CLAT in which you will need to upload a recent scanned photograph and a scanned signature. As far as coaching goes-
Career Launcher
Universal
CLAT Possible
IMS
Pratham Institute
These are most reputed law coaching institutes and all of them provide online study material and mocks for the best form of your preparation.

While filling the form you only need to upload your recent scanned photograph and scanned signature. Other documents like your 12th passing certificate, ID proof, etc. may get asked during the admission process.

Career Launcher
Universal
CLAT Possible
Pratham Institute
These are most reputed law coaching institutes in Delhi NCR.

These days an integrated course like B.Sc LLB is more common and popular among graduates having said it does not mean you cannot do you B.Sc and LLB courses separately. You should keep in mind that CLAT mostly offers integrated course and not LLB. You'll be better off in preparing for the DU entrance for admission in Faculty of Law which is considered extremely precious.