MHRD did announce that NEET 2021 will be conducted on reduced syllabus and so we are awaiting for the official syllabus to be announced. And for now stick to NCERT books. Alternatively, you can use our NEET Knockout package for NEET 2021 preparation: https://learn.careers360.com/knockout-neet-may/ . Regarding the score that you might require for a seat in a GMC, it depends on the target college, your Category and the State that you hold the domicile of. This is because every Govt. Medical College will pool in 15% of its seats for All India Counselling and Candidates of other States can participate in AIQ for these seats. And then the cut offs are different for State Counselling and All India Counselling. But you will need atleast 600 now because cut offs are increasing in almost all States. We would suggest you to keep a close watch on NEET 2020 cut offs for a better understanding of how things might turn out in 2021.