So I'm really afraid my son isn't going to walk hes 21 months and has low muscle tone.weve talked to the doctor but they said it will take some time we've been waiting for about 10 months.he'll walk with a walker for about 20 minutes. He stands for about 15 minutes with holding on and 10 minutes on his own without holding on.. Dose he try to make steps but falls after about 3 steps. So I don't really know what to do to convince he'll be okay walking.. Any suggestions??