Cluster feeding at 12 weeks?

Is anyone else's LO cluster feeding? I used to let him nurse to sleep and he would eventually unlatch after 30-40 minutes of comfort nursing. Now for each of his naps he will nurse the whole time! I'm talking 2 hours here. Not constantly, he takes breaks for a few minutes at a time but mostly nursing. If I try to unlatch him slowly when he seems asleep he roots around like crazy and wakes up if I don't give him back the boob lol. I tried a pacifier when he does that but he doesn't want it. Why? 😩😂