If you’d like to try the child theme follow these steps:
1. Download ZIP folder.
2. Install from Appearance > Themes > Add New: Upload Theme > Activate.
3. Test it out.
4. If you’re happy you’ll need to redo Customizer and Menu location settings. Those, unfortunately, get reset when activating a child theme.
If you’re already using a child theme then the above doesn’t apply. Let me know if that’s the case and I’ll help work the changes I made in this child theme into your child theme.