Is this bad?

So, my high school bf and I have been dating for a year and few months, I definitely know we have peaked in our relationship. But we’re still dating and trying to enjoy our time as it is, before we both go to college (which doesn’t guarantee we will break up but y’know, anything could happen).

We used to sext a lot and it was always super fun but we haven’t for months now, and that makes me a little upset. It makes me think that he doesn’t think about me like that on his own time, and when I try to bring it up to him he says he’s not in the mood or busy. Im not sure if it is a superficial thing to get upset about, I don’t want to MAKE him just because it makes me sad. We can still be intimate when we are around each other, but it’s not how things used to be.

Thoughts?