Ann2011 wrote:
I actually make mental notes before engaging in conversation. For example, if I know that I am going to encounter a certain person I will think about what they have said to me in the past and make a point of bringing up topics they have brought up before. Like if the last time I saw them they said they were going on a trip, I will remind myself to ask them about it. It sounds very mechanical and unnatural, but it works.
It is unnatural and mechanical, but no one needs to know you're doing that!

You're sounding like you really care about that person by being able to remember what was mentioned before. And maybe, in a way, because of your efforts, you really do. It's just harder for you than some others, but who cares since you've found a good way to disguise that and survive our oh so "perfect" NTish world without overstressing yourself out!