Advice on getting a single family home rented in October

[np2016]

I have a 4 bedroom single family rental home in a nice Columbus, Ohio area suburb for rent. The current tenants lease expires in October which I cant change.

The current tenants are downsizing with their children going to college. Great school district, quiet cul-de-sac, 2200 sq ft plus home with a huge fully finished basement with half bath, granite counter tops etc. I have it listed on zillow, trulia, realtor.com, turbo tenant, craigslist etc with plenty of pictures for the past 40 days. I had dozens of calls when first listed online but they all needed the house right away before the school season started in August which was not possible.

I have reduced the rent once already any suggestions on how to get it rented to a qualified tenant? I have had multiple showings but no further interest. The rent being asked is fair and what I have gotten in the past.

Any advice or suggestions?