Just swinging by to say hi. My youngest took GCSEs last year and I am also an invigilator.
Easy to say now but before you know it this will all be a long distant memory. As your child progresses the workload of A levels seems less (or at least it does to DS because he now has only subjects he likes!)
Good luck to all of you and hope that your DC all achieve what they need to achieve to allow them to move to their next steps, whether it is A levels, BTECs, apprenticeships etc.
Try to remain calm, make things easier for them (excusing chores if need be, healthy meals, checking timetables etc). See you all on the other side!