Taken for granted in long-distance relationship.

I've been with my boyfriend for about 2 years and recently our relationship changed to long-distance because of college (about 3 hours apart, road distance, so not too bad). We generally do have a good relationship and I know he loves me and I trust him 100%, but lately I've started to feel like he's taking me for granted. Usually in this scenario, I would decrease contact and not see him as much, and he usually starts to appreciate me more. But because we're doing long-distance, I'm afraid that this would have the opposite effect. How do I make him appreciate me more?
Taken for granted in long-distance relationship.
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