Need Opinions

Ok. I’m just going to post this question here. I’ve been dating a guy for almost 3 months. He went on vacation on Friday with his buddies. Comes back tomorrow. The morning he was leaving he text me good morning. I wished him a safe flight. The night he got there he text me saying thanks I just got here an hour ago (he is 3 hours behind where he went). Since then I only heard from him 2 days later when I asked how his vacation is going. He text me back right away to answer me. I haven’t text him a lot because I want him to enjoy his vaca. Should I be concerned that he hasn’t text me at all other than those times?. I have all this anxiety thinking what if his feelings changed or what if he doesn’t want to see me anymore or doesn’t hit me up when he gets back. Am I being crazy here?