Captivate Classic: How to retain 'next' button if student goes back to that slide.

Hello everyone!

In some of our learner modules we have a button that takes the student to the next slide. This button is on a (Self) Time-based animation, whereby the next button will appear after a certain amount of time (based on when the audio will finish for that slide). However, if a student who has moved past the slide wishes to return to the slide, they'd have to again wait until the next button appears (even though they've already viewed the slide previously). This makes it very hard to navigate for students who are returning slides/modules to check content for the exam

I was wondering if there was a way to make it that once the next button has appeared, it will retain that state when a student returns to that slide, so students don't have to wait however long after each visit. 

Thanks in advance for the help 😄