She's still quite young, and some babies just need to eat more frequently than others. As Aubrey suggested, you can gradually try to stretch her out a bit - try distracting her - but also make sure she's getting a really full feed when you DO feed her. She needs that hindmilk to go longer. She'll let you know if she really can stretch longer than 2 hrs. At her age, it's likely that she can go at least 2.5. or 3 hrs during the day. If she's sleeping long stretches at night, though, she might be making up for it during the day.