Anybody else's 7week old doing this!!!

About a week ago my daughter started cluster feeding and eating 4-6oz every hour if id let her. Sometimes less per hour.. well tonight and yesterday she's been drinking a few chugs and then passing out.. lol and waking up for a few more chuggs 40-60min later, if that.. lol itd been rare that she even finishes her bottle the last 2 days. Blahhhh its killlln me -_- like its literally not even an ounce each feeding now and she passes out and wakes up about an hour later starving. I cant get her to stay awake, she will just fall asleep with the bottle in her mouth!