Getting mixed signals

I've recently having an issue with a guy I've been seeing for the last 5 months, official for about half that time. Recently I've been feeling like he's severely de-prioritized me. I'm always the one making date plans, initiating text conversations and accommodating his schedule. When he does hit me up it's pretty last minute, I'm talking several hours beforehand.

On the other hand he's made several plans with me for the far future (month+ out) that he talks excitedly about. He's never flaked when we've have had a date set and he's honest with me when he's not sure if he can make something. I've also hung out with his close friend group multiple times and he introduced me to his parents about 3 weeks ago (conversely, he's only met one of my friends and I have no plans to introduce him to my family any time soon). I don't get that sense when we're together that he's not into me anymore either.

I definitely plan on talking with him about this stuff but I want to get the sub's perspective. Is no longer interested? Is he just getting too comfortable with the relationship? Am I just making myself too available and establishing a bad dynamic?

Anyone else experienced something similar?