How often?

Just wondering how often you & your SO have sexy time? When I first started dating my bf we had sex alllll the time & now a year later it's maybe 3x a month if i'm lucky 😔 I just asked him today if the reason he doesn't have sex with me that much is because I talk about having babies & he's too scared i'll get pregnant. He said no, it's because he's not very sexual & when we do have sex he enjoys it a lot more because it's not all the time. I just feel like it's an excuse for something else like maybe i'm not good enough for him or something. I tend to way overthink things so I need a little help understanding