I love my boyfriend but..

My boyfriend and I have been together for 2 years, and I absolutely love him.. However I feel like he hasn’t been putting too much effort into our relationship as he used to. I almost feel as if he just doesn’t care about me or anything to do with us anymore. I’ve talked to him about it many times and I’ve been giving him so much time to figure his shit out, but he just hasn’t. I’m not sure if I should keep waiting and talk to him about it again, or just start to move on with my life. I’m only 20 so I know i’m young, but at the same time I feel like I won’t be able to find anyone else..