I currently work in a room with one other teacher and we care for 8 infants, ranging from 7 months to 12. We recently got a new baby that is just learning to sit up by himself. He has obviously been carried for the past 7 months and no matter what we do, we can not get him to stop crying. We squirms if we hold him and he is not interested in any toys. We try to sing, read books, play, yet nothing we do seems to get him to stop being upset. I am very new to this job and would love any advice! Thank you!