The best way to fix this will depend on what is causing these excessive page breaks in the first place. For example, if your document contains a lot of manual page breaks, you can delete them via Find & Replace (in WinWord, you can display the dialog box with Ctrl+H). Use ^m for "Find what" and enter nothing in the "Replace with" box.
Displaying nonprinting marks will provide more information on what you are dealing with. Use the ¶ icon on the Home tab.
If you want to, you can share your document, or a representative sample, with the forum.