I just wanted to send out a response to your post - think it's great that you are offering help and hope that you and your husband are in a great place now. I am sure you have lots of advice based on your experience but wanted to add one in case anyone else is in this position and reading the thread.
I went through a similar experience - made worse by both my husband and I experiencing "crisis" at a similar time. As a result on I went on The Bridge Retreat.
This is a one week personal development experience lead by the amazing Donna Lancaster. I cannot recommend enough whether for mid life crisis, bereavement, anxiety, depression or any turning point in anyone's life. Or if you simply feel lost or stuck in life.
Search it out - it is truly life-changing both for yourself and those around you.