Jetpack carousal pagination

If you want to split your galleries into different pages, you should be able to use WordPress’ built-in pagination feature:

1. In your post editor, create a first gallery, with the images you want to appear on the first page.
2. After that gallery, insert the <!--nextpage--> comment to create a new page
3. Insert a new gallery below that comment to add thumbnails to the second page.

If you want an existing single gallery to be split into different pages without using the <!--nextpage--> comment, I’m afraid I won’t be able to help, since I’m not familiar with plugins that can achieve this result without editing the core WordPress gallery shortcode.