Questions on quitting AA

Hey all, i recently tried to go the ol' AA route - I'm almost 50 days in and on step 4 and I can tell it's just not for me. my sponsor wants me to call every night which is getting to be just too much and recently had a talk with me that I'm not opening up enough. Like I'm supposed to vent all of my frustrations of the day to her. Thing is- I'm not that kind of person . I barely talk to my friends everyday and its gotten to be more stressful than anything else. Any fellow ex AA ers have advice on telling my sponsor I need to take a step back? I'm really bad at confrontation. I had 6 months before I had a slip up which is why I thought I might try this out but it's just not for me.

IWNDWYT!