A lot of he experts out there on baby sleep recommend that the controlled crying metod of teaching baby to sleep independantly should not be applied to babies under 6 mths old. Under 6 mths they say never to leave the baby to cry itself to sleep but to always be by their side and use settling techniques. Some mums vary a little to this and leave baby to cry it out for a few mins before starting the settling. Even with the 6 mths to 12mths controlled comforting they say NEVER to leave a baby to cry for more than 10 mins by itself. I am no doctor but I can only imagine what horror your friend's baby is being subject to though I'm sure with the best intentions.
Look up the thread that I started "Jeb's mum... help" and read what Kel did. Also you may want to but the DVD/book "It's time to sleep" available on the Huggies site.
If my baby is really unsettled I use 'womb noise' to quieten her down. Try it, it works! My baby has a blocked nose at the mo but once she is well I'm going to try the method suggested by Jeb's mum.
Oh, I use the baby monitor (turn on the baby's unit without the parent's unit on to get a crackle noise or you can turn on vacuum cleaner or have a radio on untuned) for womb noise.
If all else fails there are family centres that you can ring. There is a bit of a wait but it is like a hospital where they admit and tag you, you stay for a few days and there are trained nurses to be with you night and day to guide you through on helping baby to sleep. If you are in Melb there are a few centres, one being O'Connells Family Centre in Mont Albert but I'm sure there a such centres in all states. The centre I mentioned is all covered by Medicare so there is no cost as far as I'm aware.
Mum to Aidan 20 Jan 04 and Georgia 10 Nov 05