Re: 3 month old nursing too much?
You're not doing anything wrong! Honestly, to me it sounds like you have a super easy baby. At 3 months, my kids were nursing at least that much, and were nursing every 2-3 hours during the night. And my first baby, who was a slow feeder and loved comfort nursing, I could sit and read a good chunk of a novel while waiting for her to finish. Her nursing times didn't speed up until she got much more interested in the world around her, which happened in the 4-6 month window.
Comparisons with other babies are to be avoided. Yeah, some babies are spontaneously nursing less than yours, but remember that a lot of people out there are supplementing with formula. Or using pacifiers more than they should. Or imposing rigid schedules. Just look at your baby: growing well, having good diaper output, and sometimes sleeping through the night. You can't be doing things wrong if you have all of that!
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"