Pepperminthippo - I let my 6 week old baby cry yes. I put him to bed on his own and he cried for a few minutes and he went to sleep. I did this for max of 3 to 4 days. My mum was with me the whole time as I couldn't do it on my own (dh couldn't do it with me either!)I suppose it isn't controlled crying as such, because ds fell asleep after few mins anyway and he I didn't have to leave him crying for long periods ie all night.
Day one - bath, bottle, bed at 9pm. Cried for about 10 mins, fell asleep. Woke at 2 am for a feed, then at 5am for feed
Day two - bath, bottle, bed at 8.30pm. Cried for about 10 mins, fell asleep. Woke at 2am for feed, woke at 5am for feed.
Day three - bath, bottle, bed at 8pm. Cried for 5 mins tops, fell asleep. Woke at 5am for feed.
Day four - bath, bottle, bed at 7.30pm. Didn't cry, fell asleep. Woke at 5am for feed.
He is now 19 months and his routine is similar to day 4 except he gets up around 7am.