motor delay 18 month old baby boy

Dear DR ,my 18 months old baby boy, was born as healthy 4kg baby. Never vacancies was given. Never problem with feeding.recently he was diagnosed with very mild hemifacial microsomia which has affected his hearing on left side.He is very happy baby sleeping well at night, very active copy his older sister with everything she does but from the time when he was abt 3 month old he had problem with head control. He managed to pull him self to sit position on his own at age of 9 months.one month later he could stand around future or in cot bed. When he was 11 month he could walk around furniture. Ate monment he can walk when holding my both hands. On his own when trying to walk he is floppy.pregnancy went with no problem, he was born through c-section.for first one years of his life had few times chest infection. And nothing since then
.I was giving him baryta carb 6c one to two pills 2-3times a day.please help us
What els I can do.
forgot to mention that all genetic test and chromosome came back positive.no changed :)
[message edited by kasiadziubinska on Fri, 07 Aug 2015 09:19:09 UTC]