she doesn't seem satisfied 😞

So, my baby girl is 11 days old. We've been breastfeeding and pumping. Pediatrician had me supplement for about 4 days because she dropped quite a bit of weight. Now, when I put her to my breast, she comes off and seems unsatisfied. She had a great latch and I'm not having supply issues. I told my husband her cries seem more like gas than hunger, but he insists on giving her a couple of ounces of formula. Just needed to vent. Feeling a little frustrated. Deff not giving up on the breastfeeding. Just wishing things would go smoothly.