Suggestions please

I recently miscarried Since then dh and I have been actively TTC again. Sometimes I feel like I'm pushing him to hard to conceive again. I know he wants a child but it seems like he's trying to hard and his D**k won't stay up long enough to climax. It's like he focus more on getting me pregnant then he does on enjoying it. It makes me sad because he gets so frustrated when he can't finish and he keeps saying he just want to make me happy. Idk what to do. This miscarriage really took a toll on him. He really wants to start a family. How can I get him to relax and not make it only about a baby but about us enjoying it again. I keep telling him if he's busy thinking about a baby then he gets nervous we won't conceive he's only going to stress himself and he can't keep it up stressed out. Any advice? Please I'm open to any suggestions this point? Thank you