H.J.
Our son was out of adjustment in his mid-to-upper back (something about this area coincides with the stomach), our chiropractor noticed it right away, After our sons third adjustment, he slept through the night and more at about 15 hours I woke up and freaked out thought he was a gonner, lol no joke it was the weekend and we were so tired from lack of sleep I ran so fast into his room to see if he was ok. and he was he was just so tired. He was older 4ish months. We never ever looked back, slept through the night then on (except when sick) we continued with twice weekly adjustments for about 4 weeks then went once a week for a while and now he just gets adjusted as needed. AFter about 3 weeks we had him off the medicine, we weaned him off just to be safe.
Now I want you to realize that he will be scared, he will cry during the adjustment especially the first few. My son got the the point where he was excited to see the chiropractor. A good chiro will be prepared for this, and will work gentle and calmly and will step you through each thing they do.
Yes holding our son upside down by the ankles (lower leg) not right on the ankle, was something we did, I also saw first hand him doing it to his own child. Great way to streatch them out!!