I have a 7mo DS and up until about 2 weeks ago was being nursed to sleep. My problem wasn't getting him off to sleep, he was waking up 5+ times during the course of the evening and O/H and myself were having to pick him up and cuddle him back to sleep again.
DS and I went to see the Health Visitor at our sleep clinic and she basically said what we had to do was keep DS awake during the last feed and then *put him down in his cot awake*. If he cried we would have to implement the 5 minute checking system whereby you go in and check on him after every 5 minutes that he's crying. I use a kitchen timer to help. When we go back in, we have to avoid eye contact and any interaction and we put our hand on his back/tummy and gently-but-assertively say "sssh, sleep now" a few times and then leave the room again (for another 5 minutes).
For some families it works within a few days (I've had the testimonials), I'm on about day 10 and although we've had some nights where it's been better - we're still battling it.
*** the key here is to keep LO awake during the last feed. This bit we HAVE cracked and DS does go straight to sleep (our problem is the intermittent waking!), so you might be luckier than us!***
I can't say whether it will or won't work for you guys, cos it can be gut-wrenchingly hard, but I thought I'd post it in case (like me) you're at the end of your tether and don't know what else to try.
HTH and good luck
Lara
xxx