So I have a 5 and a half month puppy (German shepherd cross husky) she was sleeping through the night in her crate perfectly from 10weeks old. Then about a month ago that all stopped. She now wakes at 2am and barks for an hour then is awake again at 4.30am with whining in between. Is this normal? Will I ever sleep again? I've tried diffusers, canine lullabies, she has my jumper in her crate and a Kong toy. She used to have a blanket over it but pulled that in and destroyed it. She's walked 3 times a day and has lots of play on walks too. Any advice or reassurance would be great.