How do I get my husband more involved?

I'm 15 weeks, and my husband and I are both excited for the baby! We both have been busier than usual with work and haven't had a lot of time to discuss the little things. I started making a list of baby names last week and add to it when I get time. I know I have a long time to pick a name! I'm just excited. I've showed my husband several times and he doesn't take me seriously. It's not like he has to pick one out, but if he could just tell me which ones he likes and dislikes - it would be a huge help. Tonight as we were watching tv, I asked him to pick out three names from the internet that he liked. That didn't happen, he fell asleep on the couch. I know he's been working hard and he's tired, but he also watched tv for two hours before he fell asleep. He easily could've had a few picked out in that amount of time. How can I get him to be more involved?