Fatigue?

Hi all - in your experience, is fatigue a pretty major symptom in early onset Alzheimer's or dementia? I am concerned about my husband who exhibits other symptoms as well but fatigue is pretty prevalent . He is also depressed so motivation is a factor. We have an appointment with a neurologist nest week but I was wondering what everyone here thoght. thanks - hugs
"Dementia fatigue is a term used to describe the low energy levels common in early Alzheimer’s. While people often associate memory loss and confusion with the beginning stages of the disease, decreased energy is an equally challenging symptom to manage."

Low Energy and Alzheimer’s: Overcoming Dementia Fatigue
https://blog.thebristal.com/low-energy-and-alzheimers-overcoming-dementia-fatigue#:~:text=dementia%20fatigue%20is%20a%20term%20used%20to%20describe,energy%20is%20an%20equally%20challenging%20symptom%20to%20manage.