Is this normal?

I love him. More than anything. I've been in love with him since the first time I laid eyes on him. We've been friends for almost six years and dating for over two years. When things are good, they're great. But bc of my anxiety and depression, things can get REALLY bad. We've had issues in the past and have worked through them but I feel like he doesn't exactly act the way he used to. We don't spend time together like we did. He used to not be able to wait to see me when he came back from a trip or when I got back from a trip. Now, he doesn't think of me being gone for a week as that big of a deal. And when I get back he doesn't try to see me for like two more days unless I'm the one that makes the plans. Is it bc we've been together so long and need to spice things up? If so, how? I just want that excitement and anticipation back in our relationship. What do I do?