I would try a syringe, like the kind you use with dogs. Take some feed and water it down enough to go thru the syringe. Then gently put it on the side of the beak and slowly squirt a little in its mouth. Go very slow as you dont want the chick to asperate it. I did this when my rooster was attacked by a bobcat. He would not eat or drink for 6 days but he made it with me giving him food and water several times a day with the syringe.