My husband has had memory issues for two or three years but was diagnosed with Alzheimer’s in February 2023. For the last 18 months he has been incredibly tired and this has worsened. He sleeps 2 hours in the morning and two hours in the afternoon, then in between he lies down or sits in a chair, always feeling tired. He’s finding it hard to take an interest in anything and can’t tolerate noise eg grandchildren or dogs. He can’t face even going to the shops now. Is this typical Alzheimer’s at what I thought was early stage? Has anyone else noticed this?