My baby completed 6 months
Birth weight -4.1 kg
Weight at 5 months completion - 8.47 kg
Born full term
He started rolling from the age of 3.5 months. From 5th month he is practicing crawling, tries to move forward, lift his back. He can roll from back to front and front to back. But when I am trying to make him sit He is either titled on left side or right side along with his head. Or mostly bends forward He enjoys tummy time a lot , but not able to sit. I am giving him
Vitamin D daily.
What is the reason? Is He is having
calcium deficiency? I am attaching photos to show. Please guide