I've noticed my 3 week old duck has been wobbly since born. I am feeding non-medicated starter (I have ducks and chickens together) and supplementing niacin in the water daily. I'm using a gallon watered and have been putting 200mg per day in there. She doesn't seem to get more sure on her feet. What should I do next to help? I've considered switching to game bird but is that enough niacin for ducks? Thank you all so much for your help!