How to set radio button fields to 'required'

Hey, I have a multi-step form on my website which includes a couple of slides featuring radio button fields, I would like to set it so that at least one of the radio button fields are required to be selected before moving onto the next slide, at the moment I can only set each individual field to ‘required’ but that wouldn’t make sense because they would then have to select all fields to move onto the next section… anyone here know how to fix this? Thank you. (Head over to the ebook page to find the form)

Here is my site Read-Only: [LINK](Webflow - AnneCarrDesign)
(how to share your site Read-Only link)

I wonder if you can use this same solution on radio buttons: