
Hi
I don't think you could put an average time for sleep on a puppy (the same as you can't for a baby) but what we have done/are doing is putting Blade in his crate for certain periods through the day etc just to make sure he is resting (especially after he has eaten) he doesn't always sleep. but at least he is resting. also if he starts charging around the house like an idiot and won't calm down we do like a 10 min time out to calm him down as being a large breed isn't practical to have him charging around (more than the average pup) maybe someone else might have more experience with your breed, or better advice :-)
em