Does he take a pacifier? I know 2 of my kids tried to use me as a pacifier and after a while it just got painful to nurse them. If he takes to a pacifier, when he's done eating, gently unlatch him and put the pacifier in his mouth.
If he doesn't take a pacifier, there's no need for him to have one. It's just one less thing you have to try to take from him when he's older. My second child never took to a pacifier, and it was nice to not have to even bother with buying them or worry about when was the right time to try to take it from her.
To answer your original question about sleeping, honestly, you should do what ever works best for you and your family. If cosleeping works best and you feel comfortable doing it, then that's what you should do. Don't let anyone make you feel bad about choosing to cosleep or not cosleep. All children are different, some love their crib, some absolutely hate it. I never liked to cosleep (but that's only because the bed was always too small), but I did keep both of my older children in my room until after I was done breastfeeding them (which was usually when they turned 1). I enjoyed having them in the room and they slept better knowing that mommy and daddy were close.
No offence but i dont see that as a valuable lesson babies need there mama's they learn how to sleep alone as they get older weather they start out co sleeping or not. Most cosleeping babies sleep better and are more secure. Not to say all babies some babies don't mind having there own space. Many mom's complain of not getting a restful nights sleep until baby starts to sleep with them it also makes mom's job easier I could just whip my boob out and go back to sleep it was great! Babies are not suppose to be independent it comes with age I don;t believe in crying out or teaching to self soothe it comes with age. My daughter is super independent she just happens to cosleep.
I dont feel i was rude from re reading my response you do what works for you I though pre baby I would not cosleep but she indeed slept much BETTER with me everytime I layed her down she would feel the bassinet walls and wake up i again would rock her to sleep lay her down and again she would feel the walls of the bassinet and wake up it went on for a week before i said lets see how she sleeps with us and at 6 weeks she was sleeping through the night. As to the studies you read there is studies that say they sleep better with mama near as a parent I guess you just do what you think is right!
I would suggest posting this in breast friends forum you might find more mom's that co sleep breastfeeding and co sleeping go hand in hand! I just saw this thing at target it is for co sleeping it is like a bassint that you put in your bed. To answer you question though my daughter has slept with us since birth she in now 25 motnhs still breeastfeeding occasionally and sleeping with us!!! We love having her close and if you are breastfeeding he may sleep much better with you that is what I have found.What works for one family might not work fr another who cares what anyone else is doing do WHAT works for you! If that means cosleeping for a couple months or until 2 there is nothing wrong with having a closer bond.