My 12 week old DD is EBF, but at night I give her a bottle of expressed milk to ensure she's getting at least 5 oz to get her through the night. We give her this bottle at her 7pm feeding, and it carries her through until 7am. I know- she's amazing! The only thing is that when she is nursing, she's done after 15 mins tops. But she is an extremely slow bottle feeder. This evening it took her 45 mins to drink 5 oz. I have been using the same slow flow nipple since she was born. I'm wondering if it's time to switch to medium flow since she's such an efficient breast feeder but is really slow on the bottle. Any advice would be greatly appreciated!