Help is not mom related

Not mom related help I’ve been trying to be there for my boyfriend who’s suffering from depression and alcoholism. Any advice? He thinks I been distancing myself but in reality I’m giving him space because idk if he wants me to be there or need his space any advice? Every time I talk to him he sounds real sad or doesn’t respond. Also the last message is cause he’s stresses out a lot because he’s his own boss. Help I feel like a horrible girlfriend like idk what to do I also suffer from depression so sometimes I need to be alone so idk what to do for him😞