So I was able to get confirmation from FRRO that my passport should be valid.
i think the six month rule only applies to new visa applicants and that’s what my says in IATA and all airline travel requirements.
India Doesn’t have a six month validity rule for OCIs and ongoing visas
Dear Sir/ Madam,
Please refer to your trailing E-mail dated 15/03/2025 regarding OCI Travel Inquiry.
2. Your passport should be valid along with OCI card at the time of Arrival / Departure, subjected to other Immigration check.
Regards,
Team FRRO, Mumbai