Hi, i had a lamb who we hand reared cause her mother completly regected her!! I took her home and had her on a hot water bottle i was choobe feeding her to start with and then took her onto the bottle. It does take time to get the lamb used to succeling but the lamb will eventually get it. The sooner you start to bottle feed the better the longer you leave it the less likely you are or the lamb succeling. Hope you're lamb is ok.