Sex drive too high?

My boyfriend and I have been together going on two years. In the beginning we saw each other a few times a week and had sex each night we hung out just bc it was SO GOOD. Now we’re together pretty much all the time, but hardly have sex. It’s still amazing when we do but it’s like once a week going on two weeks.. im horny every night and I even tell him but he doesn’t make a move or doesn’t seem as interested. He claims he is always tired (which he always is) . I know he isn’t cheating. I just don’t know what to do 😢 like i can only satisfy myself so much.