You can prevent it from advancing by keeping you cursor in the carousel body. That doesn't really make up for the fact that a carousel is a poor UX choice, but it's a handy trick for carousels that advance too fast and it works on most implementations.
Edit: Now that I think about it, using the cursor hover to prevent the carousel from advancing seems like an anti-pattern. If most users are like me, they will move their cursor out of the way of the carousel to prevent obscuring the content. I have seen users who like to trace and/or select the current text they are reading, so maybe it works better for them.
Edit: Now that I think about it, using the cursor hover to prevent the carousel from advancing seems like an anti-pattern. If most users are like me, they will move their cursor out of the way of the carousel to prevent obscuring the content. I have seen users who like to trace and/or select the current text they are reading, so maybe it works better for them.