Hi Robin,
I would recommend you to use Acrobat software to convert this pdf file, Acrobat software enable you to customize the conversion settings.
You can download a free 30-day trial from this Link : https://helpx.adobe.com/acrobat/kb/acrobat-downloads.html
After downloading and installing acrobat, Open pdf file in Acrobat, go to File menu -> Click 'save as other' -> Microsoft Word -> Word Document.
A pop-up window will appear that would prompt you to choose the file to be converted, after you select the file, click on the settings button on the bottom left of the pop-up window and choose 'Retain Page layout' under layout settings, click ok and then save.
Hope that helps with your query.
Regards,
Rahul