He won't talk to me

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My boyfriend and I have been together for 4 month now. In the beginning, we'd text for hours during the day and through the night, and he was the one who initiated it most of the time. Now, we text maybe once a week, with short messages instead of paragraph and usually about what our plans are.
Last night I told him that our concert plans for switched up and that I missed him a lot (I've been on vacation for almost a week and I haven't seen him in 2) and he never responded. OOOOH THAT BOY!! 😤 DAMN MY LOVE FOR HIM!
What do I do?? I really do love him a lot, but it seems like he's taking me for granted and honestly being a jerk.