Hi, my 6 month old wears an orthotic helmet for plagiocephaly (he has had it for about 3 weeks). Before the helmet he slept well: bedtime around 6 or 7, slept until 3:30-5:30, took a bottle and went back to sleep no problem. But most importantly, he would fall asleep if we put him in the crib drowsy (but awake) without making a peep.
Now, he has to be rocked into a deep sleep and placed into the crib carefully to avoid waking him. If he wakes up, he screams. We have tried sleep training/returning at progressive intervals, but he only seems to get worse the longer we leave him without picking him up, and what's more, he often rolls over, moves around until his legs are stuck in the crib rungs (trapping him upside down), and with the weight of the helmet and him screaming like he is dying, I am terrified that he can't breathe well and that leaving him per the sleep training instructions is a SIDS risk.