Night time feeding

Hello. I started co sleeping w my 2 month old. When I feed him we both lay down and he feeds on my boob. Sometimes I fall asleep and notice he is still on my boob hours later! When I pull away he wakes up and cries! I know he's using me a paci for comfort .. And he won't take a real paci ! How can I break this habit? He only falls asleep on my boob! I'm also worried, do I need to burp him? Also I end up leaking all over my bed! I have a wAterproof sheet under my sheets, but I hate my room smelling like milk! Lol! I even wear a bra with a pad and still leak!! ☹️ any advice? Any one on the same boat?