Is justice required in visiting and spending the night between two wives, knowing that one of them has Alzheimer's and is not aware of those around her?

A father is obligated to be fair between his two wives in terms of overnight stays, even if the wife's condition is as the questioner mentioned. The purpose of overnight stay is not only intercourse, but also to comfort the wife by staying in her home. A wife may waive her right to an overnight stay. Justice between wives is obligatory by consensus, and it is due to the sick, the woman in postpartum bleeding, the menstruating woman, and anyone with a legitimate religious or natural excuse.