deactivate?

[violetpretty]

I doubt you'd be able to get early alum status. Early alum status is generally reserved for members who (including, but not limited to):
transfer
leave the school for any reason, even if just a semester
get married
are working on their bachelor's degree for longer than 8 semesters

Your sorority might have different policies regarding different membership status, so check with your chapter president or someone on the chapter's advisory board, but I'd be REALLY surprised if there is an NPC that allows a member to go early alum (i.e. not pay dues, not have the obligations for more than one semester yet still remain a sister) just because she "is bored" or "doesn't feel close with sisters" or "doesn't want to meet people".

I'd give suggestions to an active who "feels bored" and "not close with sisters" but you sound like you don't even want to TRY to make it work. I honestly think that if you wanted and tried to get closer to sisters in the chapter, you could, and you'd really enjoy yourself.

There have been members in my chapter who became less active as time went on and decided to quit. Usually, they felt distant from most of the chapter because they hadn't been active in much, and therefore didn't feel it was "worth it". However, I can guarantee you that if those members had decided "Hey, I am going to start being active in the chapter" that the chapter would have been very happy to have them "back" so to speak.

You basically want the benefits without the responsibilities, and that's not what membership in a sorority is all about. You need to reexamine what it is that makes you want to stay and evaluate if that is important enough to pay the dues, attend the events, etc.