Hi, I'm looking for some accurate information regarding the bus

Hi, I'm looking for some accurate information regarding the bus from Orvieto to Bagnoregio. I've tried the Cotral website, but the search never works for me. I found an typed schedule from a blog, but have no idea if it is still current or accurate. We will be arriving in Orvieto on Wed, July 24 at 15:47. I understand that we need to purchase bus tickets from the tobacco shop in the train station, and the bus stop is across the road by the funicular station. We are to take the Cotral bus that says Bagnoregio. The schedule that I have says the last bus is at 18:25, so we should have a good amount of time to between arrival and the last bus (hoping this schedule isn't outdated). And should things go sideways, is there an alternative way to get to Bagnoregio? Thank you!