Low Sex Drive

Its been happening for a few months but I just realized my sex drive has been really low.. Im not interested in having sex or doing anything sexual with my partner. We only have sex two/three times a month and we used to have sex almost everyday when we got together and had gotten to that point in our relationship. I’m not sure how to “fix” it and my partner hasn’t said anything about it so I’m not sure if he’s bothered by it or if he’s even noticed my lack of interest. I know I should talk to him about it but I wanted to ask yalls opinions first to see if I could get some advice on what to do or how to talk to him about it.