Suggestions to get your SO involved in the pregnancy

My guy is amazing and he's just as excited about this baby as I am. It's adorable. HOWEVER!! It's beginning to frustrate me how little he knows about what's going on in my body... and worse yet, he'll tell me I'm WRONG about some stuff!! (example-at 7 weeks pregnant I said my belly was bloated and he literally argued that it's a baby bump and not bloat... like really?!). Anyway, I'm now nearing 10 weeks. He comes to all my appointments but I just feel like he's not trying to learn things or get educated. I bought What to Expect When You're Expecting and he hasn't touched it. I mentioned parenting classes and birthing classes, and he made some comment about how its dumb these things exist when our parents did just fine without them, etc. I know I'm the one growing the baby but I feel like he should know stuff? Like when I cry over food it's my hormones? Or when I take 3 hour naps it's normal? What do you guys think? How can I get him involved?