I’m so stressed out!

Honestly my baby isn’t gaining weight fast enough i guess. She was born at 7 pounds 4 oz went to 6 now at 10 weeks she is 10 pounds. I guess the pediatrician isn’t happy with that but I can’t help but worry because I feed my baby every two hours only 2-2.5 oz because she will spit all up. So I’m so stressed. The daycare I was going to take her to would prefer I didn’t because they don’t have the time to feed her every 2 hours then if she doesn’t eat feed her the next hour. It’s so stressful... also her poop is all over the place one day it’s hard the next day it’s normal then it’s runny. She doesn’t have a fever now. She had her vaccinations last week. And she hasnt ate as much since Ben. So probably she only eats 20 ounces a day -21 If im lucky . It’s so stressful guys I feel like a failure. Also since I can’t get her in daycare unless I pay more. I’m staying at home...