Baby isn’t eating

My daughter is 5 days old and I’m trying my best to ebf. She was doing alright while we were in the hospital, we were having trouble latching bc i have flat nipples so it’s more difficult, but she was eating often and for decent amounts of time. Now, she’s been going sometime 3-4 hours and when she does eat, she’ll eat for like 10 minutes and fall asleep. I’ll do things like tickle her feet, play with her hands, pick her up and switch sides, and she doesn’t wake up. When she’s awake she seems very awake and alert, and she’s passed all her tests. I’m starting to worry bc sometimes i hear her stomach making noises, I’m not sure if it’s bc she’s hungry or if she has gas and it’s just bubbling, but I’m getting nervous. She doesn’t cry a lot, which makes me think she’s not hungry. We go to the dr tomorrow, but just wanted to hear from you guys beforehand.