SPB - I tried with with 18mo DS a few weeks ago and it is STILL WORKING !!
He was being cuddled to sleep by me or DH depending on my shift pattern and I just decided to switch the routine to see what happened.
So we went from sleeping bag,brush teeth, story, bf (or cows milk before teeth if i was working), cuddles/sleep...
..to cup of cow milk, brush teeth, sleeping bag, story while in cot and then mostly sleep.
I miss my bedtime bf cuddles, but I still get the odd one if he wakes up at night or doesn't settle. If he is teething or overtired it doesn't work quite so well. He's just feeding morning and nap time now. (plus odd ones if he asks)
He's taken to it really well I was 
He also favours the scrunched up at end of cot position 
FX it's good for you too. :)