I see NDVO is now in their 9 month mark. With Sep applicants being less, I forsee this to become 8 months soon.
Plus I know for a fact that, NDVO stopped asking for Passport too early starting Nov applicants which means that they had further chance to reduce backlog and so I see this 8 months soon becoming 7.5 months.
Only catch is that Oct and Nov application load should not 300+ but which I highly doubt will be the case, as Oct and Nov and even Dec are traditionally not that busy when it comes to marriages in India. Only June, July are.