Sorry to double post doc, but I wanted to give you a pointer
When our babies are around 3 months old we put on a web halter with a lead rope attached that is about 5-6 foot long. Long enough to reach the back feet at least. Let them walk around with that rope on every day for a few weeks. Its unbelievable what that little thing teaches.
They will learn to give their head to pressure, not freak out when their tied and to figure out how to get themselves out of a situation.
Some may think that is cruel but do it anyway. I've seen people put the rope on and just leave it for weeks without taking it off. I'm home all day so I would take it off at night and go check on them several times a day. I only do this when they are in a small containment area, not when they are out in the big pasture.
Hint: use an old rope because by the time its done the rope will be trashed.