My husband was in the hospital with a UTI for four days; and I was exhausted, even though I just came during the mornings for Dr visits and then again around dinner time. Can't imagine months. If your husband has dementia, likely he will not remember if you are there daily. It helps to do something else aside from duty here and there so you can sustain your schedule. Make sure you are eating properly, getting enough hydration and fresh air. If you have a friend who can meet for a meal, that could also be helpful. My goal is to give my husband (dementia?) kindness as much as I can while keeping myself healthy. It is difficult. I just had covid and then, two weeks later, a wicked salivary gland infection.