WHEN THE OTHER HALF IS AT 20%

What do you do when your partner gets so down and in a funk that not even his favorite meal can pull him out of the mood that he is feeling. I understand why he feels the way that he does, but I do not know what to do to get him out of it. He barely eats and just wants to sleep all day. I wish that I could pick him up and let him know that I am here for him. Sometimes when he feels the way that he feels, it makes me feel down as well. The last time he fell into this mood, we moved five states away and started over fresh. Maybe it's the pressure of having a pregnant wife, two toddler girls, and no employment. I am doing all that I can to pick him up....but he is still down.