Hi Anna,
I agree with Kelly! Also who is to say one habit is bad and one is good! All babies are very different!

Ds at that age was waking every 2-3 hrs for a feed or just a soothe! He would fall asleep at the breast and I would too, but I didnt move cause I was already asleep!
I dont belive co sleeping causes bad habits as its very natural for your baby to want to be close to you. They have just spent the last 9 months being part of you so to put them in another room will make them a little unsettled!
Ds has now gone to his cot cause he just wasnt sleeping at all in our bed and is sleeping great! He does come in at about 3 though for a feed and we fall asleep together! I know that as he gets bigger he will come back to our bed, hopefully!
Dont know if this actually helps I think I may have just rambled a little sorry!
good luck x