Aw Jen,
sorry to hear your news, glad he's not Coeliac, but the thyroid problem you could do with out, (((hugs))) I know you'll manage, your a fantastic mum and Khalebs very lucky to have you.
As for the over activity, sure you don't get a full nights sleep anyway!, maybe he'll wear himself out and you'll finally get that nights sleep, and if he's that active he'll maybe need less insulin (trying to make light of it and put a smile on your face) I know it's going to be a juggling act for you and i wish you both all the luck in the world,
Take care, ((hugs)) to you both
Suzi x