Ebf baby dropped percentiles

So my baby went from 16% to 7% when she turned 6 months old. She hasn’t lost weight, she just gained very slowly and they want me to bring her in for weight checks.

She doesn’t take a bottle, I’ve tried. Nor will she take a sippy cup or eat more than a tablespoon of solids.

The doctor told me to feed her more and I try I really do. It’s to the point where I have to go to a quiet place for her to nurse because she will get distracted which is rough bc I have a toddler too. I can’t really get quiet enough for her to focus on nursing. I’d love to give her bottles of breastmilk or formula but she will not accept it. What will happen if she needs more milk and won’t take it from me? Im stressing over this because she will be 7 months soon and hasn’t gained much this month and is still at 14lbs. What do I do? Anyone been in this situation?