A good drill to teach yourself to be aware of your feet and the spread of your mass is to lean forward from the hips while the feet are flat on the ground and your behind stays in place and avoids leaning back to balance out the body. Using a wall or a post to let you know you are doing things right and not touching it with your behind start to lean forward with breathing as fast as you need to and use the ankles, knees and mostly the feet to create the right amount of support through tension in the right places. Feel out your feet first and tense and relax them in parts. Don’t be surprised if you feel areas of your legs activating first in alarm as you move this way and Learn to calm down and find a way. You can always smile and breath.
Another way to calm yourself down is to count out loud or speak out a prayer you enjoy.