Hi, is there a way to copy & paste or export & import only a specific section from one site to another?

I usually work offline because I prefer not to make changes directly on the live site. When I’m satisfied with the result, I need to move that work online — but I’m having trouble exporting only the part I need. Until now, I’ve been exporting the entire page, importing it into a new page on the live site, saving the row I want to clone, and then adding it from the saved library.

Is there a faster or more efficient way to do this?

Thanks.