No. You needn't register for any Government Medical College separately for admission to MBBS. NEET is the entrance examination for admission to MBBS courses in Government Medical Colleges, Private Medical Colleges, Deemed/Central Universities. Now 15% of the Government Medical Seats are filled through All India Counselling and 85% of the seats are filled through State Counselling. The State Quota seats are filled divided into 70% Regional quota and 30% State Quota. The 70% Regional quota seats are reserved for Candidates belonging to Vidarbha, Marathwada and Rest of Maharashtra. And the Constitutional quota of Maharashtra is for Candidates belonging to SC, ST, Vimukta Jati/Denotified Tribes, NT-A,B,C,D and OBC. NT-B falls under OBC Category. If you want a seat in this College, you should score atleast 25-40 marks more than the previous year cut offs. In 2019, under 30% State quota, the cut offs for SGMC have been as follows:

General Category: 663

OBC: 641

SC: 605

SEBC: 635

ST:  575

Under 70% Regional Quota seats. the cut offs have been as follows:

General Category: 644

OBC: 596

SC: 526

SEBC: 590

ST: 385

Now this is 2019 data and cut offs change every year. Cut offs change every year depending on various factors such as no.of Candidates appearing for the exam, no.of Candidates qualified, top NEET score and difficulty of the exam And if you are preparing for NEET, you may as well try our NEET Knockout package: https://learn.careers360.com/knockout-neet-may/ . And because you have  another month to prepare for NEET, you may as well use this opportunity.