Help: Change schema type to NewsArticle?

Hi! I’m not a coder so I’m hoping there’s a simple solution.

I would like to change the schema @type from Article to NewsArticle.

My site is on GitHub but I didn’t see a place in my existing files to do this.

Based on this forum post - it sounds like I may need to look at the head helper and create a new template - but that sounds rather daunting.

Hoping someone can be more explicit or offer more guidance here.

This relates to the ongoing failure of Google News to pick up my stories about eight months past launch. I’m still looking for solutions.

Update: I did see a way to do this manually via code injection for the individual post but I wasn’t sure if there was an easy way to do this for all posts. I’m sure there is a way - but not sure how easy it is.