Heck, many of us have done this for years. Letting a shy fawn hide under your chin and reach up to suck your earlobe, standing over her so shes secure, theres lots of tricks. How many of us have gotten the fawns with "lockjaw" lol! Been there done that, right? Every fawn teaches us another lesson. Long pop bottle nipples, while oversize for duplicating the doe, also fit the upper palate of most fawns easily to allow a good fit for sucking. I agree with you folks who open the hole at the tip, too. When the fawn wont suck and the milk is spilling I dont like it, but it does help them get to nursing when theyre stubborn. If nothing else, have someone "groom" the fawn while you apply the nipple, it stimulates them like the wiping does.