They do sleep alot as long as they are active, eating, and drinking I would not worry to much. As for the crate I did crate train Milo, here are a few ideas to help you as I am not sure what you are doing
The crate should only be large enough for them to stand up and turn around.
Try to make it a cozy place , this may sound odd but I put a dirty baby blanket in the crate as a liner (I put it in the laundry basket for 24 hours) while this sounds gross it will smell like you soothing the puppy. Lastley naked baby in the crate no collar no harness nothing that could get caught on anything. I hope this helps |