Feeling like a really terrible mother now. I don't know the start and finish dates of DS1's exams. I need to find them out, write out a timetable, stick it on the fridge etc.
Second if it makes you feel any better about your DS1, my DS has done absolutely no revision for GCSEs since the mocks in January. He didn't really revise for them either, if I'm honest. I'm crossing my fingers that they are doing a lot of revision at school and that he will perk up nearer the time and start doing something.
My DS also has Maths Olympiad today. Reading your post reminded me so I have texted him good luck. Good luck to your DS too.