It takes two hands to clap. Try to care more about him, little gestures count. eg, praise him for the things he had done for the family. Tell him you know he has been working hard for the family and you appreciate that. Send him encourage texts and show you care for him.
I had gone through tough times too. the more i pry trying to get him talk ends up unhappiness for both of us. I tried the above and it works, though it may take some time. If your hubby cares for you too, he will response.