I live in a two story home, but we, my husband and I have set it up so that we live on just the first floor. He is soon to be 88 and I’ll be 87 in January. He has alz., probably mid stage, and I have several diseases..polymyalgia rheumatica, CKD and a few other things. We do amazingly well, but the challenges are ahead of us. My son does live upstairs but we live separately, and independently, and oversees, but only streps forward if he has a concern. Er dtay in our own lanes.