I've been caring for my husband for eight years, first with MCI and for the last few years with Alzheimer's. One thing I have come to appreciate about his journey is his ability to adapt when he can no longer do things. Reading your post, sounds like your husband can no longer navigate to find the contacts on his computer which must be very frustrating to him. And yet, your husband has been able to adapt to this loss by using post-it notes to recreate his contacts in an accessible place. He wants to maintain his independence. No need to help, just appreciate his efforts and agitation will disappear.