My son(13 months old) was sleeping only in indian traditional cradle (thottil) . if I try to take him out he wakes up immediately.but he is sleeping well in cradle and he wakes 2 or 3 times, if I feed him also he won't sleep back, he will takes full feed and then I have to put him in cradle then only he is going back to sleep. we have done all the safety things like the cradle was very low, bed under the cradle. and i will sleep near the cradle, anklet chain for my son, so if he wakes up in night I can hear the sound. my only concern is sleeping whole night in cradle will make any back bone problems or neck problem. because His bones will be in developing stage. and people's are saying his chest will not get broader. is it true?