To get him to keep his head up, tie him with his head up for a couple hours every day. We tie ours with their heads up from a very early age, but we've had success with doing it with older calves. To get him to walk better, tie him up all day. I mean from like morning chores until evening. Don't feed him that morning. Give walking him to water a shot at noon, and if he doesn't want to walk, just tie him back where he was. Try to walk him to feed and water that night, and see if he will. We've had it where we won't feed a calf for a day or a day and a half, and then they will usually walk to feed. If he walks to feed, try walking him to other places in his pen. Feed and water is a great incentive for calves to get them to walk. Good luck, I hope this helps a little.