I need help !!!!

Me and my boyfriend have been together almost two and a half years. And our sex life has just gone down hill 😐 we're lucky if we're both in the mood for hand stuff once every two weeks. (Compared to like 3 times a day before) I don't know what to do because I feel like he thinks I find him unattractive but I don't sometimes it's just very hard to get in the mood you know? Anyone got any tips on how to boost out sex life I'm just so confused 🤷‍♀️😒