Sleep training

There are many theories about when parents should begin with sleep training of the baby. Most of them suggest to start letting the baby 'cry it out' between 4th and 6th month and that this method should work within a few days. We should expect to handle about an hour of constant crying for at least a day or two until he learns that being placed in the crib means that he should go to sleep.

Well, now that he is almost 6 months old and very strong both physically emotionally, we thought it would be a good time for to try the routine. If nothing else, during our travels he's gotten so used to sleeping in the same bed with mommy and nursing all night long whenever he felt like it, that he should at least get back to the crib even if we had to place him there when he was already asleep. So last night we put him in the crib when he was tired but still awake--Robb sang him songs for a while and Nikolas actually fell asleep! That was the first time that he didn't fall asleep in our arms or while nursing!
Today when it was time for a mid-day nap, we tried it again: he whined on and off for about 10min and then fell asleep on his tummy!
Just now before his night-time sleep I fed him and put his in the crib and although he was semi-aware that I was putting him down he didn't even cry but continued to sleep! Unbelievable; he used to fuss so much when he'd catch me putting him down and I'd have to pick him up immediately and carry him around until he was sleeping solidly.

If this is what 'crying it out' is for Nikolas, we are the luckiest parents!!!

Other updates:
Our boy finally has some noticeable hair on his head :)
He is starting to babble even more. Yesterday he cheered Robb up with 'dada', and he has these long talking sessions with a serious tone that sound like he is actually holding a conversation, where he says everything he can say by now.
He learned to stick his tongue out all the way just for fun. It used to be just a bit while he was saying 'bbbb', but now he thinks it's funny to stick it out all the way to almost touch the tip of his chin :) I have to catch this on a photo, it's too funny.