Can you explain more about the growth loss? Has anything changed with your culture? How did the fans look before they dropped? Were they old or new growths? More information may guide whether repotting at this time of years is warranted or not. The growths could just be old. In which case, repotting is not necessary.
I am a delinquent and will repot certain things this time of year. However, the results are always better when repotting around the growing season. Most plants rebound more quickly and are less stressed when repotted closer to the growing season.