my baby is 5 month 5 days old he is not holding his head properly sometimes hold sometimes downward position..is it normal..or need to go to doctor?? I m worried

A. neck holding of the child should be present by 4 months to maximum 5 months of age. regular massage of the back as well as the neck will help in strengthening the musclesd of this area. if neck holding and head holding is not proper by the end of 5 monthsd it is important to meet the doctor for examination to find the cause of delayed milestones