Why can't my boyfriend finish inside me? :( He's 21 and I'm 23.

When I first met my boyfriend, he shared that he has a foot fetish. Initially, I was supportive and tried to assure him that he shouldn't feel embarrassed. I even adapted my routine to accommodate his needs, letting him finish over my feet while I was falling asleep, often staying awake longer than planned. However, we've run into a significant issue: he struggles to have "normal" sex with me. Though he wants to, he's unable to perform. This has become a real challenge for us, especially since we both want to have a baby. If he can't finish inside me, that goal seems nearly impossible. We both recognize that his foot fetish has started to overshadow our relationship. He recently suggested we stop focusing on it since it may have created an unhealthy dependency for him—his ability to maintain an erection seems tied to his interest in feet. I love him deeply and am committed to finding a resolution, but I won't deny that this situation is really tough on both of us. I'm feeling pretty down, and I know he is too. I'm open to any suggestions. Also, if you could check out my last post, I’d appreciate it. (Sharing a picture for visibility.)