Sleepy Dust

Any ideas on how to keep my baby awake while feeding? If my nipple is even near her face, she falls asleep. She's great at latching and eating but at night she doesn't eat for a long time bc she falls asleep. I'm sleepy, she's sleepy. Its a little frustrating bc if she's not getting enough food, she'll wake up sooner to eat. Its like my nipple has Sleepy Dust or something. Ha!