Wayne,
I have never done this with eastern milks, but I have got many reluctant alterna and annulata eating.
#1 - Patience, wait them out, they do not want to die.
#2 - Live lizards, if you can find very small live lizards, they can work great, but do not work all the time.
#3 - Patience, did I say this one already. Actually, many breeders will brumate their hard to feed neonates, having them come out of brumation eating like champs. I have never tried this, but if I had the means, I would.
#4 - Other scents, I raise my own mice, but I also raise African Soft Furred rats as well as Deer Mice (Peromyscus sp.). The scent of other species of rodents (especially the Peromyscus) will sometimes trigger a feeding response. If you have enough of the other rodents, many times you can actually feed their pinks, instead of Mus musculus pinks.
#5 - Tails, what did he say? Tails? Yes, adult mouse tails. Cut the tails off of frozen adult mice. Cut the tail at a slight angle, close to the body of the tail. Also, cut the last 1.5" or so of the tail off. Hold the neonate between thumb and forefingers, gently "start" the tail. Push the end that was closest to the body of the mouse in first, and slowly push the rest down the hatch. If you put the "fat end of the tail" in first, the direction of the hair will help to prevent regurg. Also, once you have 90% or so of the tail down, they will usually take the rest.
#6 - Liquid Diets, I take a 10 ml syringe and I think it is a 14 ga needle. Over the needle I have a catheter tube (brand new one, no used ones, I do not know the gauge of the tube, but it is a pretty small one, I think). The tube it cut at about 10". Also, one brand new catheter tube, when cut will produce two "feeding tubes", one of them will have a blunt tip (the original tip of the tube) and the other should be cut on the bias, so that it will be pointed and able to squeeze into tight mouths easier. When I do it, I start, by giving about 2 ml (cc) of liquid and work my way up. Many feed scrambled eggs like this, but I mix my own feed. I take a small jar of veal or turkey baby food and add in 4 ml of Canine red cell (its a dog supplement, that can be found at many feed stores).
#7 - Patience, they will eat, sometimes they just need a little help figuring that out, and need some help getting nutrients as they take their time. I have had both alterna and annulata that took only one or two mouse tails or baby food meals before they ate on their own, and I have had some that took 10 or more, but they all eventually ate.
#8 - Keep trying, even while assist feeding, keep trying other methods, I would usually place a pink/scented pink/live/FT/lizard/ect in the deli cup over night, and if they did not eat it by the next day they would get an assist feeding. As for the assist feeding, I would try to give it to them about every 4 days.
#9 - Confinement, I have found that any and all methods have worked better for me if I kept(housed) them in a confined area. With all of the neonate alterna and annulata that I have worked with, I have had far better results with animals that were housed in deli cups, over those that were housed in shoe boxes. Once they were eating consistently, they were moved to shoe boxes.
If you get them eating FT lizards, you can also tie one a pink to the end of the lizard. I usually have some cnemidophorus(which most milks and kings love) in the freezer, and feed a foot with a pink tied to it. Kinda "uberscenting".
Good luck.