sorry kinda long but stick with me bc i need the help..We were dating for about 3-4 months before we started being exclusive about a
month and a half ago..things were good in the beginning but now she has stopped
calling and texting nearly as much as she used to, and that kind of bothers me maybe because im kind of needy considering this is my first relationship, but i dont convey this to her in the slightest bit because i hardly ever initiate contact with her first..she has also stopped calling me babe/baby and saying love you or miss you in her texts or on the phone which wouldnt bother me but its a sign of something more significant i think..as a result of all of this i am kind of becoming a BIT bored with the relationship probably because im not getting the attention/affection i did before but nonetheless its still kind of boring me a bit, but i still like her a lot, maybe even love her..i dont know what to do about this anymore because i hardly call/text her as it is so i cant really freeze her out..what should I do? thanks a lot guys i need the help
btw were 18 and still in high school if it matters..

Maybe she's wondering what's going on too??? You have to have communication in a relationship for it to work. Just talk to her. Say hey this is how I'm feeling, how do you feel? Get talking about how the relationship is going. Stay positive.

I have and she says that she thinks, or says she thinks, nothing has changed and everything is the same, which clearly isnt the case..i always talk to her about how our relationship has changed and clearly that isnt fun to talk about, so id rather try to figure this out without talking to her about it if possible..and doesnt it seem kind of AFC or needy to address this with her?

yeah I'm not sure that talking with her about how the relationship is going is the way to go, it does seem slightly on the needy side imo.
try initiating first abit more, if she won't notice the difference if you freeze her out then I'd say you should be initiating a tad more

If freeze outs don't work, definitely initiate more, she might be looking for a bit more leadership from you.

wouldnt initiating now be rewarding her bad behavior?

Well, maybe she feels as if she has put so much time into you and you aren't putting time and effort into her. Which is why she is pulling back. If she does all the initiating and you do none this is the case, if it's around 50-50 then a freeze out is the best option till it becomes like 70-30 or 60-40(her initiating more than you).