Girls ?? Daughter has been capricious for a week now, especially durin…

Girls ?? Daughter has been capricious for a week now, especially during the day, milk is definitely there and it flows well, I hear her often swallowing when she eats actively... But she eats, eats, then suddenly moves away and cries, then again eats. I change the breast, and again so. A couple of weeks ago we started giving water from a bottle with a pacifier because of the abnormal heat. Could this be related to that? Or maybe again this developmental leap could be the reason?