Getting s/o more involved in pregnancy

I have been getting this " im not interested" vibe from my husband during the pregnancy. I send him belly photos and talk to him about our appointments and talk to him about his son and he is interested for like 2 minutes and that's it.

I have tried to talk to him about a birth plan and I plan on having a csection and this is his first child and it's important to me he is there obviously. So I was trying to tell him hey you should ya know go read up on csections and what you can do to help and I got a we will see response from him.

Now I'm just aggravated and feel like he doesn't care or not interested in this whole thing. Granted we are far away from each other due to his work but it still bothering the y'all out of me. I know it's the hormones but do you think I'm being to aggravated or am I in the right for not liking his behavior?