Urgent: Fujikyu Railway Question

I’m currently on the Fujikyu railway heading from Otsuki Station toward Kawaguchiko. I bought round trip passes from Otsuki all the way to Kawaguchiko, which is the last stop (18th stop).
I’m wondering I I can get off at Shimoyoshida (14th stop), go to the temple, and then an hour later use my same railway ticket to get back on the train and go to Kawaguchiko? Or will they make me buy a new one?

Thanks!