Too much coming out??

I've had no problem producing milk. In the first week I was over producing it seemed and was pumping a little as well just because my boobs were so engorged . My baby is 3 weeks tomorrow the first week or so she was eating around 8-10 mins then last week started going more around 15 mins. She had her dr appointment Friday and she's been gaining so well the dr was so proud of her. She was born 6lb 3 ounces. When we left hospital she was 6 lbs and two weeks later at her dr appointment she is 7lb 8 ounce. So we know she's eating well. Ever since yesterday she seems to only been eating 5-8. Mins then falling asleep and sleeping so well. But my boobs are so full!!! Im wondering if my milk is coming out two fast all of a sudden because for example just now she ate for a few minutes and then got kind of frustrated and pulled of. Fell asleep for 3 mins then ate 2 mins more. But I look at my boobs when she pulls off and the milk is pouring out. So maybe it's coming out to fast or to much for her?