The phrase "big fuss" means making a lot of noise or commotion about something, often exaggerating its importance or causing unnecessary trouble. Full definition
Once the pup has been placed in the yard and done his business make a really big fuss over him by showing him how pleased you are. (dogingtonpost.com)
Try not to run, shriek, scream or make big fusses around pups that you don't know well! (adoptapet.com)
Did the OTLA put up an equally big fuss about law firms being able to be LLPs or individual lawyers to become professional corporations, the main reasoning which is to limit lawyers liability? (otlablog.com)