Automator Folder Action - Wait for File to Close

I am brand new to Automator. I created a single-step Folder Action that uses Open Finder Item to open files with a Photoshop Droplet (which opens the file in Photoshop, performs an Action, closes it, and saves a renamed JPG to a different folder). It works great for JPG files, but I also want to use it for PSD files.

The issue is that the Folder Action runs as soon as I've saved the PSD to the folder, but I often need to make more changes to the file after I create it/save it for the first time. I save regularly as I work. The Droplet also includes a close step in the Photoshop action it runs, so it actually closes the file soon after I save to the folder. Is there a way to make the Folder Action wait to run until I have (manually) closed the file after making all changes?

I typically drag file(s) onto the Droplet in Finder to run them, so saving to a working folder and then moving the PSD to the final folder when I don't have any more changes defeats the purpose of the Folder Action. Any ideas?

Thank you in advance!