I am wondering Jen if perhaps he doesn't need a medication adjustment? Sleeping until 1 pm sounds as though he may not be sleeping properly through the night (due to nightmares, insomnia, etc) and thus has a sleep deficit. Alternately, you mentioned extra stress. That could definitely be affecting him, to the point where he wants to hide in bed and/or is exhausted due to stress. Has he had any therapy to learn techniques to deal with his stressors?