I Am Concerned About My Husband. We Have Been Together

I am concerned about my husband. We have been together for 6 years and he used to sleep walk often, getting disoriented getting up at night to go to the bathroom. now I have noticed, he can't remember conversations we have the night before. This morning he went up to get his work shoes and came down with his church shoes. Are these things I need to be concerned about?
sorry I can't afford the money. sorry for taking up your time.