No, that is completely rationale and normal. One of the ways I can tell whether mine is "checked in" to me is whether he is doing things for me. I figured out his LL is acts of service. On his last touch and go in March he figured out that our cats were chewing through all of our power cords and went out and bought some for us. This time he is cleaning out the garage. When he lived at home, if he was giving me my vitamins every day then I knew he was in. As soon as he stopped, I knew he was out.
From what I've read NPD usually has a 3-6 month period they can wear the mask. My guy is definitely a three monther. After that, it is too tiring for them. It literally takes all their energy. Keep in mind also that it generally takes something like 7 tries to leave an NPD relationship. Therefore, they could be bickering, fighting, and making up for all you know. Again, that is what mine does.
