@Xmasfairy86 My tips for what they are worth.
. Reassure them that they can do it, and if they don't do as well as hoped it isn't the end of the world. (Hopefully they have a plan B for 6th form / college)
. If they are bright reassure them there are loads out there who will struggle way more than them.
. Either way reassure them you are proud for trying, and what will be will be.
. Practice calming techniques such as: slow their breathing, 54321 technique (5 things they can see, 4 they can hear, 3 they can touch, 2 they can smell, 1 they can taste). If they start to panic in the exam they need to take a break to recentre.
. Tell them not to talk to anyone before the exam (anxiety is catching)
. Put some lavender oil on their wrist or rescue remedy stuff
. If all else fails ask the GP for some propranolol to take before exams
(My DD is 20 and is resitting maths. She gets a reader, rest breaks smaller room, and 25% extra time. She currently has zero GCSE passes due to missing y11 for MH reasons. This is her first realistic attempt at maths as last time she sat it 2 years ago she could only last 1hr in each exam.)
Edited to add. Fresh air walks daily.