Day Trip of Lessor 3 Gorges on Danning River from Wushan

Any suggestions appreciated on how I pre book a day tour boat ride of the Lessor 3 Gorges on the Danning River from Wushan. Perhaps an Agency or website I can do this on before I leave Australia. All I'm getting on the internet is 3 and 4 day Yangtze cruises with this trip as an optional for along the way! Likewise the Shennong Stream from Badong. That looks worthwhile too. Thanks!