Tiredness is listed as a symptom of polymyalgia rheumatica (PMR). See more info from Mayo Clinic here: https://www.mayoclinic.org/diseases-conditions/polymyalgia-rheumatica/symptoms-causes/syc-20376539

Others have talked about fatigue related to the condition as well as while tapering off treatment with steroids. See this related discussion:
- PMR and Fatigue. Interesting study: https://connect.mayoclinic.org/discussion/pmr-and-fatigue-interesting-study/

@rllh5403, have you been diagnosed with PMR?