Is he losing interest or just busy if he suddenly stopped texting me?

why is he all the sudden not textng me? it wasn't much on Sunday because he was with his cousins and I knew he was at work Monday and now its been over a day and no response and just yesterday he said he was probably gonna come out my way to see me. We've been seeing eachother for almost a month and I just stayed the night last Friday and left Saturday and that isn't the first time i've stayed the night and he's stayed with me. He has barely been active on snap but he still would usually respond and when I jokingly say my dog misses him and of course me genuinely he just sends a blank snap back but in person he says he missses me. We had a romantic wekeend two weeks ago and he said a relationship isn't out of the picture just has to see where it goes so im lost

Is he losing interest or just busy if he suddenly stopped texting me?
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