Modifying this control will update this page automatically
on the title image to play a Memory Movie. Hold the pointer over the movie until the video playback controls appear, then click the Action pop-up menu 
on your Mac, click Memories in the sidebar.Double-click a memory that you want to see less of.
Scroll down and click Suggest Fewer Memories Like This, choose the type of memory you want to see less of, then click the Suggest Fewer Memories Like This button.
To reset Photos to create all types of memories again, choose Photos > Preferences, click General, then click Reset Suggested Memories.
Delete a memory
In the Photos app
Change preferences in Photos on Mac