Relationship connection and Depression

So my SO suffers with depression and has for a couple of years. He feels like we have lost our connection and reckons we aren't able to have fun. I feel differently about that. 
How do you get the connection back in a relationship with a depressed person? 
I told him we don't make enough effort to spend time together. He works night shift, I'm in nursing so I work days, arvos or nights but I'm also studying which means I'm away from home quite a bit. So we really only have 2 weekends a month to spend together.