Anxiety that my bf has shown less affection

my bf and i have been dating for nearly 6 months but we’ve known each other for 2 years. recently, i’ve noticed that he’s been less affectionate and showing less love. he still puts in effort and always wants to be around me. but i feel like it’s kind of different now, do you think it’s just because the honeymoon phase is coming to a close?
i just don’t understand and it’s giving me anxiety, he stopped getting me little gifts he used to get, he made a whole self in my room dedicated to items he bought, now he just talks about all the birthday presents he’s getting me which is months away. he’s sweet and cares about me but i just feel like it’s different now. and i don’t know what to do about it