College application - slow processing speed

[LakeFlyPie]

DS is in the process of applying to sixth form colleges for A levels. He has been assessed as having slow processing speed by SENCO at high school and qualified for extra time in exams. He was a bit concerned about including this on his forms but head of year has reassured us that declaration will not negatively impact his application

Should we simply declare this as 'other learning difficulty' on application form and request extra exam time as support required? Anyone have experience of this?

Has he spoken to student support at the college he's applying to? Year 11 Dd gets extra time and it was a priority for her to speak to staff at open events. They took her details and explained what would happen when she starts. She's looking to go a different sixth form from the one at her current school and was very worried about this. They were very reassuring and she's crossed that off her list of worries.

I think she put on her form that she'd spoken to student support and currently has extra time (which college said would probably continue. She absolutely needs it).