First let me say welcome to YT!
It does sound like he is depressed by the move. This poor guy has an awful lot happen in his life. Have you taken him to the vet to have him checked over??
I'm wondering if anything else has changed? Diet, time alone, etc?
Is he spending more time alone while you're going to school? Perhaps he has slept so much during the day, that he is having trouble sleeping at night. Maybe some good hard playtime before bed would help. Or at least extra attn.
I'm wondering how he is feeling - like are is teeth in need of a cleaning or are they bothering him - I might be reaching, but it does sound like it could something beyond the move.
Did he have a yard to play in and now he doesn't? Or doggie friends?