Space?

My SO and I have only been together so about 4 months but lately I've noticed that he isn't calling or texting as much. He hasn't been acting any differently and he still holds my hand in the halls and walks me to all of my classes(I'm in high school). We do talk all of the time, and I mean ALL of the time, i don't think there's a time when we aren't unless he's at work. And even at work he calls me during break and texts me when he can. I know he isn't hiding anything and I'm 100% sure he isn't cheating but I think he might want a little wiggle room to spend more time with his friends Anand just be alone. Lately I've been getting a vibe like he feels like he's trapped. He hasn't said anything to me about and of this it's just something ive noticed. How much is to much space and how do I give him space without him thinking I lost interest? Thanks!!