Hello taxpayer,
Going by the limited facts of your query, I can deduce that you are a non resident in India from income tax purpose for FY 20-21.
Regarding maintainence of NRE account and tax exemption on interest from the same, the NRI status needs to be looked upon as per FEMA act and not income tax law which I hope you will be able to meet.
Also, you may not get covered within new residency rules as per the given facts
However it is advisable to take telephonic consultation and share complete facts for detailed understanding and precise advisory.
Best Regards,