Help! I feel like it's never going to happen!!

Amie
Hi all, 
My husband and I have been TtC for about 3 months. We both have the same feelings that if it happens it happens. BUT he's just not realising the input need to TtC. He's a paramedic so works 16 hour days, I can see that he's physically tired when he's home. Because he works shifts there's not a regular pattern to our life. And it feels like when I'm most fertile he's on nights or has been out the house so when he's home he just wants to eat, shower and get to bed. And I feel like it's never going to happen :((  He's the most attentive man I know but we just aren't BD that often. Like this last month it's been 4 times! I've literally tried everything i know. Talking to him, getting him in the mood the whole thing. I feel like we're never going TC :( I feel quite alone at the moment. Has anyone been on my position? I Just want TC so badly!! baby dust to all xxx