Hey,
If you have provided with the EWS reservation in your AIIMS form while applying then you need to provide you with the certificate at the time of counselling.
If you didn't provide them with the certificate at the time of counselling your candidature might get cancelled.
So I will suggest you to get your EWS certificate made from your block office in the provided time span.
Else ask them about some time from them for submitting your certificate
Hope that helps.
Thank you.
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