"My baby is 6 months old and has partial control over their neck. I consulted with a pediatrician, and they reassured me that my baby will gradually gain full control over their neck. I've noticed that my baby has good neck control when rolling over, but when I hold them in an upright position, they're not able to control their neck fully. Is this normal, or are there any exercises or tips you can suggest to help my baby develop better neck control?"