Change text frame size on all pages in document

Hello,

I am changing the size of a book so much that the text frames needs to be resized. and I was wondering if there is any way to resize all text frames in a document at one time?

Or if the best way is to copy the whole text to a new document and start all over?

or do you have an other idea? its not possible just to scale it..

Unfortunately the one who made the first book did not use master for the textframe.

all the text is linked through the document

Hope someone has some input

kind regards

Lisbet