pip review, physical disability- do I add new adhd & depression dxes?

Hi , I’m helping adult son (late twenties) fill in the AR1 review form, he gets enhanced PIP for both categories for a physical condition and has done since a child. Since the last review he’s had a dx of ADHD & one of depression. The dilemma is if we mention these to any extent, I worry that the case manager will think he’s claiming pip partly due to neurodiversity or mental health and I’ve heard about them cracking down on benefits for that (unfairly of course) so I feel it might be better not to muddy the waters, and concentrate on the physical condition as per the past. What do you think?