Why baby no longer wants my breasts

sok

Hi there, so my lo is 11weeks old and she’s breastfed and formula fed. She usually likes to be breastfed but I notice the shorter period of feeding 2-3 days ago. As of yesterday she no longer wants my breasts 😟. Any momma experienced this too? Could you help share tips on how to get her to like breastfeeding again? BF is exhausting but it helps make me less anxious and stay close to my lo. Hope I can find a solution. Thank you so much 🙏