Babies who shuffle bottom tend to walk late. If her developmental in other areas is age appropriate, please do not worry. Unfortunately, calcium supplements can not help anything that is not caused by calcium deficiency. If your kid is started on calcium, I presume that her levels were checked already. If in doubt, please consult a child specialist. .

Hello there we understand your feeling and your concern towards your babies future But you need nit worry if he has achieved other milestones like talking, orientation to what you speak and if he has gained all his teeth then there would be expected delay in any of the milestones. If this is not the scenario then he should be taken to a child specialist. If everything is fine then wait and see he will develop in no time and meanwhile he needs your help too. Thank you