Hi, we have a 5 month old cocker puppy, not our first dog. We are trying to crate train, but he just cries when he's left! We've tried bringing the crate upstairs. We've tried leaving him to cry it out. But we haven't kids who he wakes up, and we're semi detached so worried about waking the neighbours. The only thing that works right now is me or my husband sleeping on the sofa with him. Help - advice please!