Making a Child Theme & Keeping Old Changes

I love your theme!

I do have a question on how to make a child theme on the Dazzling theme yet keep the old changes.

Because I didn’t know about child themes before, I started using your theme and making changes to it without creating a child theme before doing so.

My question is, is there a way to keep all the changes I’ve made and ‘export’ them to the child theme.

If not, how would I ‘manually’ go about recording and re-doing the changes (ie. which areas of the settings should I copy down on paper so I re-apply to the newly created child theme)?

Thanks for the help.