I'm having serious worries about this method. Tried it for the first time last on my 6 month old with varying results. Worked first 2 times in night, but after an hour of crying after waking at 2:40am I ended up feeding to sleep, which just felt plain cruel after putting him through all that crying.
I am sure his little body was flooded with cortisol. Well over 2.5 hours of crying over the course of 3 wakings in one night. Even though I am present with him, how is it ok to subject him to these high levels at such a tender age?
Quick google on cortisol release:
When babies are allowed to cry without receiving a nurturing response, they release a large amount of the stress hormone cortisol into their systems. When this is allowed to happen regularly, their brains develop permanent, life-long patterns of increased cortisol release in response to stress. These excess stress responses are coupled with abnormally low base levels of cortisol. This abnormal cortisol-release pattern is strongly associated with depression, heart disease, and autoimmune diseases in later life.
In addition to the permanent modeling of brain receptor responses, chronic cortisol elevation makes babies more susceptible to illness. Incidentally, mothers release cortisol when their babies cry, too, increasing their own susceptibility to frequent illness, heart disease and depression.
In contrast, affectionate, responsive care induces the release of positive bonding and health-promoting hormones such as oxytocin in both mother and child.
I know the difference with CIO is that you are present with them through out, but it still isn't the 'nurturing' response he needed otherwise my little one wouldn't have cried for well over an hour? So in terms of cortisol release, how is this different form CIO?