I really need some help....

I’ve been with my boyfriend now for about 2.5 years. He really is my best friend, I love him dearly. About a year into the relationship I moved back home with my parents (different state) after I got an amazing job offer. I wanted to save money before starting and had some other issues going on with my roommate so I decided this was the best option. We decided we wanted to continue the relationship because we loved each other too much to let go. Our relationship continued to grow and we were doing amazing. I get to see him every month and everything has been going smoothly up until recently. I just feel so drained. I don’t know what it is but I just feel so unhappy. Of course we fight from time to time but it’s not that. I’m just so exhausted. The last time I was down there I just felt off. I travel for work I travel to go see him. As of now I can’t move back there but I will be able to within the next year. I just don’t know if I can make it. The lash thing I wanna do is break up but sometimes it feels like I’m just suffocating. And I don’t even know why. He’s a great guy but it feels like I’m drifting apart from him and I don’t want to 😓 I really could use some advice