Use one CPT field in another CPT

Okay, I am pretty sure I should be able to do this but for the life of me am having difficulty figuring it out. I created a text field and a dropdown field in one CPT using the New Field in the GD CPT Settings. I want to be able to use these fields in the other CPT’s to save me having to rebuilding them 7 times, but the only way I see to do that is by creating a custom field in functions.php.

I am not a developer so this seems a bit excessive to create a function just to get a field into another CPT. I was also thinking that I can add duplicate a field in the db and assign it to various cpt’s but I also don’t want to break the db.

So what is the best method and how do I execute?

Thanks,
Joel