Sorry this is late.
If you want a chance to speak, ask your lawyer to let you have one. Especially if it is evidence about how your DC performs. The panel are likely to want to hear this from you anyway.
Actually, at a tribunal I helped my relative do, they went straight to her as the mum and asked her to say what it seemed like from her point of view.
She was totally unprepared for this, but gave a good explanation of her frustrations in getting things right.
So as that was unexpected, I now suggest people speak from the heart about their DCs strengths and weaknesses, and their hopes and fears for DC in the future. I am hearing that sometimes the Tribunals ask for it at the end.
If you are seeing this just before you go, don't worry: You know your child very well and could do a very good job of this kind of summary standing on your head - you have probably had to explain a dozen times to friends and family already.
Remember, when you will come out at the end of the Tribunal, you will always wonder if you should have said, X or avoided saying Y, but there is no perfect answer, and no perfect tribunal. If you have been totally frank about DCs strengths as well as weaknesses, you will have done as much as you can.
Lots of luck reader. Be thinking of you