Baby weight gain

My little one is 2 weeks today and isn’t gaining weight. She was born at 8lbs 12ozs. Her one week checkup had her at 8lbs 5ozs, and her weight check today at two weeks still has her at 8/5. We have another weight check next week and if she still hasn’t gained anything our pediatrician wants us to go back to supplementing with high calorie formula.

She had low sugar when she was born so we supplemented in the hospital in order to get her sugar up and regulated. We supplemented for 3 days once we got home, then moved to solely breast milk. We’ve just upped her bottles to 3ozs, and she eats every 2.5-3 hours with a 5 hour stretch at night.

Does anyone have any suggestions on what I can add to my diet to help her gain weight better? I never had this issue with my first, so I am completely clueless here.

I appreciate any and all information you can give me. ♥️ Picture of my chunk for tax.