The feeling of sadness at the sight of a loved one is no longer what it once was. Especially related to memory that over time decreased. In fact, you almost do not recognize the figure anymore. However, do not be too long sad with this condition.
Instead of focusing on memory weaknesses, it's best to focus on other, more useful things. For example, his increasing abilities have succeeded in composing a puzzle, his hairdo is getting better, or how well he can walk without using a stick. Simple things are actually very helpful to them and can change your point of view.