How to add a button or link to a different collection from another collection's page? Dawn Theme

Hi Everyone-

I’m trying to figure out how to improve navigation from collection to collection on my shopify page via the Dawn theme. I sell non-alcoholic wine and beer and have two collections with said products. See screenshot below:

Once you click into one of the collections, you of course only see the products in that collection. But once you’re in a collection page, the only way to see other products not a part of that collection is by clicking back into the home page, and then entering into the other collection from the home page. To make navigation more streamlined, I want people to be able to jump right into a different collection from whatever collection page they’re viewing, does that make sense? See the sad little illustration I did of what I’m thinking below: