Our 15 week old doodle has been sleeping in his crate in our extra bedroom thru the night until 7am since we got him...at least up until this week. He's been waking up now earlier and earlier every morning. Also, because I work from home, I have been crating him in an extra bedroom for 3 hours at a time. Up until this week, he's been fine with minimal crying. This week, the cranky cries last a good hour and then die down for an hour and then start again. His crate is covered and we have a radio going. I haven't changed anything in terms of feeding or exercise....suggestions?