Hi

Which Aiims are you asking  about?

In case,

If you are targeting Aiims Delhi for mbbs with a score of 650 then it is a little low even if you are from sc category as per past year data.

For example,

In neet 2020 cut off for AIIMS Delhi is provided below category wise :-

Category      cut off rank        cut off marks

General           51                         705

Obc              218                          692

Sc                1198                        671

St                  2239                     660

You can check the same by downloading the result pdf available on the official website of MCC the link is provided below

https://mcc.nic.in/UGCounselling/Home/ArchiveDownload

So, if you from sc category then to get a seat in Aiims Delhi you should target at least 675 marks in neet 2021 to be on the safer side

But for other Aiims like Aiims Nagpur etc , 650 marks is a very good score being from SC category

For example,

In neet 2020 cut off for AIIMS Nagpur is provided below category wise

Category              cut off rank          cut off marks

General                  2902                         665

Ews                         3963                        650

Obc                         4077                        649

Sc                           25565                       588

St                           44984                       556

Now , limited time is left for your neet 2021 examination, so focus on preparation, go through the chapters , practise questions and then revise them, go through mock test papers once you are done with complete syllabus. You can prepare well using neet program, link for the same is provided below

https://learn.careers360.com/knockout-neet

Thank you