Find and Replace for lower case

I have a file with stories in it and at the end of each chapter, there is an English>French dictionary for all the words in the chapter that are French.
The dictionary is found within a table which is anchored into the text box of the chapter text.

The French is all lower case and the English is all title case. Ex. mes petites – My little ones
They have now decided they want the English to be lower as well – mes petites – my little ones

How can I search for a style and change the case to lower case? I see I can select each table and do this, but I’m wondering if there is a faster way.

Also, I have the annotations plug-in. I thought I could just accept all changes, but it is not picking up the changes within the table. Or rather, it finds them, but does not change them.

Any ideas?