Baby not wanting breast?

K

So I started out exclusively pumping with my daughter. Well at 2 1/2 I got her back in the breast. She has been for a little over a week now. I still have to supplement with formula like maybe once every 2 days. Anyway, today she had completely refused my breast. I’ve tried for over 3 hours to get her to latch and she’s having none of it. I finally caved and gave her a bottle. I have never seen her drink a bottle that fast. What do I do?