how do I change my baby's sleep-feed habit?

Kitty
She's a 6 months old baby who doesn't like to be fed when she's awake, and only let me feed her when she's drowsy. During her awake time, she likes to crawl around and play with her toys. 
Recently, she wakes up 30 minutes after her night feed and cries until someone picks her up from her crib. After we calm her down and try to put her down, she refuses to stay in her crib. I have to nurse her to sleep almost every night. We already have routine for bedtime, but she used to sleep through the night after the last feed. 
Please let me know what I can try to break her association between breastfeeding and sleeping. I really appreciate all kinds of help to improve her ability to fall asleep on her own.