I know what you mean. My wife's family rarely calls me but when they do I know sometimes it's going to be bad news...they always call me when something happens, because they know I will be an immediate support for her and can break bad news lovingly. So far, I've had to break news of two grandparents passing, and news that she actually had cancer...yes, usually that comes straight from the doctors, but her doctor in this case was her mom's boss at the time and he felt it best to consult all the family as he had permission from us to share medical knowledge. That's been nearly 10 years ago, still one of the hardest things I've ever had to have a conversation about. But, we're stronger for it. (Shes in remission now)
Keep your uncle's influence on your life at hand during this time, it's the good times and experiences that keep us from getting too steeped in grief. But, allow yourself to mourn as well. It's a difficult but healthy process. He will know your loss from his new home in heaven, and he wont be crying but rather laughing at how silly it is for you to be upset! Celebrate his life, and your relationship. That is a wonderful legacy ;) luv ya darlin'