Urgent update of document

I have a PDF created via InDesign of a document that I now need to update the text in. I have the source file, and Fonts etc of the original file. The new text is in a word document - i require the document to look exactly as the original with the updated text. Attached is the original document so you have an idea of the size of the document This is extremely urgent and needs to be completed with 24 hours of a contractor being appointed.