Preparing InDesign layout (initial designed for print) for the web - problem with overlapping images

So a client of mine wanted to take her magazine layout, prepare it as a single-edition app and submit to Apple for her. Great! Done that before so it's easy enough. Except... It was designed for print (even though it never was printed). Several images/text overlap two pages. Is there a way to get InDesign to put the images/text on both pages when I change the Document Setup from Print to Digital Publishing? Right now, the image and/or text sticks to the page it was originally designed on, leaving behind a LOT of empty space. With over 200 pages, I would hate to go through and double everything up, risking too large of a file size for submission... Any suggestions?