if possible bring mill outside so he can see and hear something he's familiar with . Never try to make him run,let him settle in and get over the fear first always show him confidence along with gentle words of encouragement. Once he gets over the fear he should stand up fully. Only then should you move your chair in front of the mill and encourage him to walk. Once he starts to walk he's feeling secure on the mill. Progress is a slow process so take your time with him. He will eventually start to look forward to his time on the mill. Whenever he starts running the mill keep his sessions short early on untill he gets himself together. DO NOT RUIN HIM BY HURTING HIM ON HIS NEW TOY.