Co-sleeping, breastfeeding

My son is currently 10 weeks old and I am cosleeping (not bed sharing) along with breastfeeding. He used to sleep one three hour stretch at the beginning every night and then two hour stretches. Now he sleeps one two hour stretch and then wakes up every hour to feed. I am wondering if it could be my milk supply or if he's just soothing himself because he doesn't feed for very long before going back to sleep. I'm waiting for a lactation appointment but wanted to hear other mother's experiences!!