15 months is still in the normal range for not walking. Nothing to get upset with just yet. However, if he has this muscle tone issue is there anything that they need to do with him right now? I mean what and when are the appropriate treatments. If there is basically nothing that must be done at this moment I would just wait and see. No need for invasive testing and treatment if it is unnecessary.
With that being said I'll just say this. My mother did not walk until she was almost 2 and she is perfectly normal. All babies develop at thier own rate. Intuition is a strong indicater of weather there is something wrong with your child. Just continue to listen and lead with your heart. You're on the right track. Good luck and keep us posted.
With that being said I'll just say this. My mother did not walk until she was almost 2 and she is perfectly normal. All babies develop at thier own rate. Intuition is a strong indicater of weather there is something wrong with your child. Just continue to listen and lead with your heart. You're on the right track. Good luck and keep us posted.