Quality time with Parents

Just spent a couple of hours with my Mum who is suffering from early stages of dementia.  I go over most days so that I can sit with mum whilst dad gets on with anything he needs to do, like shopping, walking the dog etc.  The problem I noticed today is that dad too is now forgetting what he has said and done only a couple of days previously and denies ever having said or done them.  Will have to keep a close eye on this and a lot of prayer is needed too, I think.