My Dad died of cancer a few days ago... I cant sleep either. I toss and turn wondering if he's alright on the other side. When I get sleep, I dream of him lying in that hospital bed, still suffering. Here's what I think is going on with me... it may help you as well.
While I was prepared to let him go physically because of his suffering, i wasnt ready for the pain I;d feel. There's a huge void, which I cant seem to fill. It's not him who's suffering anymore, it's me, because I miss him. And if he hasnt crossed over then it's probably because of my inability to let go of him. But then again...it's barely been eight days, and with time I'm sure I'll be able to let him go.
Mirik, you did the best you could for your uncle while he was alive and I did the best for my dad. Now it's time to take care of yourself, pick up the pieces and heal. And once we begin to heal, they'll start to rest.