If you have passed your 12th from any school of Delhi under any board the you are eligible for the Delhi 85% state quota seat for the NEET counselling. You can use the EWS certificate from Jharkhand as a category proof and there are no issue of problems regarding that.

To know more about the NEET Domicile Criteria visit the link below:

https://medicine.careers360.com/articles/neet-domicile-criteria

For NEET college predictor visit the link below:

I hope this answer helps. All the very best for your future endeavors!