I don’t think the guy I’m talking to is interested in me anymore.

I 23 F have been talking to this guy 25 M for about 2 months now. We met on a dating app called duet and hit it off immediately. Everything started great we talked every day I didn’t have to wait for a reply for more than 15-20mins at the longest we flirted, gave pet names,etc. until recently I’ve noticed that he’s suddenly pulled back quite a bit these past almost two weeks where even if he was at work he’d try to respond in an hours time and when off replied faster and we held conversations, he still sent emojis and flirted etc. now he still texts me “good morning baby☺️” and asks how my day is going so far but then I don’t hear from him almost all day. I get that he’s at work an I’m not upset about that. What upsets me more is when he’s off and now I don’t even get a fast reply if I don’t it’s a simple 3-4 word response or something surface level. On Valentine day he didn’t wish me a good one I had to say something and he told me he was spending it with his mom and brother in Tampa….mind you we are long distance from each other about 5 1/2hours from eachother. But after working all day at my restaurant I knew it had been hours I was hoping to hear from him like a check in but I got nothing..I texted him and asked how his Valentine’s Day was and he never responded to me the rest of the night. I put a lot of effort in trying to always make myself available to text, I take interest in his job,etc. and I don’t really feel like I’m getting that anymore.

I need a guys advice is the guy just not interested anymore or could something have happened?

Would it sound it needy if I wanna ask “I noticed you’ve pulled back lately i just wanna make sure everything is ok?”