(This information may not be relevant now as I see that both NewYork and Houston consulates are outsourcing the OCI (and other processings) to a third party... THANK GOD!!!!)
As with any processing that is done by the Indian consulate in the USA, OCI card processing also is a blackbox with minimum feedback and unanswered questions by emails and phones. We recently applied for the OCI card and experienced frustration like many others who applied too. They stick relatively close to the times described on the consulate's web site but lack of feedback puts you in a tense spot. Here is a sequence of how our OCI processing went - this can be used as a guide for your situation.
The processing times for various stages of this application vary greatly between different people's applications.
Send your US Passports to the consulate at this point....................