I had a colt once that got strangles at a month old and couln't bend his neck to nurse. I still had the mare and she looked after the baby, but I had to milk her out several times a day and feed the colt to keep her milk in production. Sometimes I would milk her out on the ground just to take pressure off the teat, and not feed it to him. She was a heavy milker. What a pain in the BUTT but at least the foal grew up normal, psychologically. It was a TON of work. Don't ever want to do it again, much less with a real orphan.