hun.
remember sucking is a very normal and natural way for bubs to go to sleep, maybe going cold turkey at 6 months is a little too much for her, can you sneak in at the 35 min mark before she wakes and pat her so she stays asleep and moves into the next sleep cycle?? this was suggested to me just this week, but i havvent had a chance to try it yet.
how often is she waking at night? can your rock her when she wakes in the night??