Hi Wena,
I cannot advise you about mg but I wanted to reach out to say hello and welcome. The forum is a wonderful place to share, get support and make friends. There is an MG sub forum.
I know your heart must be breaking to go through this. It is tragic when ones child suffers and one can make no sense of why such thing has happened. I encourage you to get support. Perhaps there is a support group in your local area for families of young children with physical disabilities. You area United Way or Easter Seals might be able to to provide some resources.
Please make yourself at home here and come when you need companionship and understanding. We all know suffering and the roller coaster that health problems can be.
I am sending hugs and prayers for well-being for you and your family.