How much does your 3 month old weigh?

My LO was born 6lbs 12oz and weighed 11lbs 3oz at her 2 month appointment. She is now 11 weeks and 2 days and only weighs 11lbs 9oz. (I weighed her at home) I am shocked by how little weight she has gained. She is breastfed, but also pump when I go to work. She does not drink more than a 4oz bottle at a time and my DH is lucky to even get her to drink that much. How much do your LOs weigh?