I assume the ferber method means crying it out or allowing your baby to self sooth.... the only reason I know that is because i remember the term being used in "meet the parents"
Yep, I've used it, and it works.... you use it with judgement though....
parenting is really a trial and error thing... you try different methods... and you finally find out what works for you and the baby.
You know, you hear all kinds of bad stuff about spanking, crying it out and so forth.... but as barbaric as mothers accuse those things of being, they work, and well, I- a brave one, disagree they aren't barbaric....
But I use judgement. I personally don't resort to spanking as the only method of punishment, but I do use it when I feel it's most appropriate from time to time, and contrary to popular belief, sometimes a rebellious toddler just needs a good pop on the [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse] to bring them to their senses.
We start to use the "ferber" method at about 2 months, but not full blown till 4 months when we really know what our baby needs and want at that time.... sometimes they just need to cry it out--- once again, contrary to popular belief.
But when you use the cio method, it doesn't last forever... it's really a training method, and has proven quite effective for us. If it wasn't effective and seemed to upset the child more, then trial and error would've taught us to try something else.
It worked beautifully with our last baby... she was sleeping through the night by oh I don't remember, 4-5 months... it's the starting the method that's tough... and it's usually my husband that initiates it when I'm at work... which was about 3 months with my last baby.... but it only took a week or two, give or take..... and ever since then all you'd have to do is read her cue that she is tired, put her in bed... no fuss or cry... sleeping soundly like a baby.... walla! Is it worth it? I think so ....
I think you have to get to the point of preferring sanity and then you start to say "maybe it isn't so unloving...." and you start to mentally process through it.... you realize that a momentary discomfort won't scar them, they aren't being harmed, just basically having a tempter tantrum assuming your intune with what your child needs and why they are crying...
And if you can't deal with temper tantrums in children with a hard hand..... then you've got a lot of trouble ahead.... because sometimes kids just don't like "no" and you have to learn not to give in if you don't want to create a monster.
Hope this helps someone.
HB