Need help!

Angelica

I just had my first baby 4 days ago on Tuesday. She pooped Thursday at midnight and then didn’t poop till 10 this morning. She hasn’t pooped since. She is sleeping all day and barely feeds. I just got my milk in so I’ve been trying to feed her as much as possible. She lost a whole pound already and the doctor said to feed her for 10 minutes on each breast and then give her an ounce of formula at least every 2 hours. She absolutely hates the formula she just spits it out but she won’t feed for more than about 6-10 minutes on one breast and then she falls asleep and won’t wake up at all. Idk how to get her to eat more. Does anybody have any advice??