I'm a US citizen and want to sponsor my fiancé for a K-1 visa, but we're having trouble gathering the required documentation. What should we do please?

You should consult with an immigration attorney to determine the specific documents required

Gather evidence of your relationship, such as correspondence, photographs, and joint financial documents.

Consider seeking guidance from an immigration attorney to determine the best course of action

Ensure that you're complying with all requirements and regulations for the K-1 visa