That's activity 11 - planning and following journeys, which as I suspect you know forms one of the two activités which make up the mobility component.
Of course people with ADHD and or autism can get points for activity 11 (response to a PP, not you OP).
What you will need to do is get your decision notice from your tribunal (unless you know what points were awarded)... and on the relevant activities on the AR1 (review form) which you were awarded for write "no change, I still struggle with ? due to my ? and require an aid/ prompting/ assistance (delete as appropriate).
DWP have to demonstrate evidence of improvement if they are going to remove points from you. Your form shouldn't evidence and improvement if you follow my advice on how to fill it in. However, what you tell the Health Care Professional when you have your next medical assessment (which the AR1 will trigger) could cause problems.
What I would be questioning here is why none of this was mentioned before in your original claim? Having a diagnosis is irrelevant as i would assume these conditions were functionally restricting you. There would potentially have been some inkling to it in the Health Care Professional Assessment report. Did the tribunal explore activity 11 in your hearing? What has changed for you? Yes, you've had a diagnosis - but two of the conditions you'll have always had. What has happened to cause you issues with going out? Is it more the BPD perhaps? What you will need to do is reflect this in the AR1 under activity 11. You will absolutely need medical evidence and I don't mean confirmation of diagnosis. What I mean is a letter from a health professional evidencing your restrictions in going out alone. It will need to be their observations rather than "x tells me she can not go out unaccompanied."
Your difficulties in going out must have been going on for at least 3 months.
I think you will have a difficult job to get points for 11, but with the correct evidence, it'll be fine. There is always a risk with PIP unfortunately. However, you are aware of how to challenge a decision, and if you lose your award you can and must challenge the decision.