515 this year is not good if you belong to UR/OBC , the probable cut off for AIQ will be around 540-560. Secondly all the top colleges of state would be picked up by students getting around 610-550, so there are very less chances to get a good seat however there are very few chances in average college.
If you can manage another year drop with high chances and faith on yourself of getting 600+ then you should drop, else fingers crossed.

Hello Radhika

According to your score in NEET 2019 which is 515 there are decent chances that you will get into your desired college below i will share you  link where you can predict which college you can get into according to your marks 

https://medicine.careers360.com/neet-college-predictor?utm_source=google-search&utm_medium=paid&utm_campaign=neet-clgpd

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