Pass through UTM parameters on Indexed Page

Does anyone know how to pass through UTM parameters on secondary pages within an index? 

I'm using this script to pass through the UTM parameters to SQF, and using hidden fields on the form (SQF_CAMPAIGN, etc.). I can get the parameters to pass through on the first indexed page (eg. xyz.com/landingpage), but the second page on the index (eg. xyz.com/landingpage-1) will not submit the parameters. Can anyone think of a workaround?

Page Looks like this:

• INDEX
  • PAGE 1
    • FORM 1
  • PAGE 2
    • FORM 2

Reference: https://stackoverflow.com/questions/57600462/how-to-track-utm-data-in-squarespace-form-submissions