Has he lost interest or just busy

We have been dating 3 months but knowing him since February. We did have a talk how I felt he was pulling away but it was just that he was busy and he put in more effort and showed me so we were good but recently on a few spontaneous trips he planned for us idk I felt him more comfortable or distant idk I think I just miss in the beginning how he was more affectionate.. more attentive .. like could our relationship just be hitting that stage where we are comfortable and the honey moon phase is fizzling . This is my first healthy relationship after all my past relationships being toxic .. Idk if it’s just me overthinking or something