Tipper my h too is depressed could be manic or bipolar as well. Fortunately he is taking meds. My h commented to our c that he was suprised how well the meds work.
If your h doesn't want to take meds, you could try the combination of 5htp and St Johns Wart, both over the counter herbs. They are mood enhancers and I take them and notice a real difference. My h was taking them too before meds he noticed a difference, but nothing like the meds now. Maybe because of the severity of my h's depression.
Also our c has mentioned some form of physical fitness and eating healthy too could help with depression.
Sounds like your h is making progress!
Me 50 H 42 S 22 S 9 D 7 M 12 T 17 H moved out 8/2006 H moved home 1/2007 for 3 weeks H moved home 5/2011 for good
"Learn from yesterday ~ Live for today ~ And hope for tomorrow"