I helped care for baby cottontails when I volunteered at a wild life shelter, so I'll try to help as much as I can. I had to dig out a bit of information to answer your questions.
Age and Amount (This WILL vary so much depending on type of rabbit. It is impossible over the internet to see your particular rabbit, so this is only approximate.) You can use KMR kitten or KMR kitten plus Goat milk, regular not low fat (never cow's milk). Add a pinch of acidophilus (aka Probiotic) to the formula to promote healthy gut flora. (As you're already doing I see) Formulas vary depending on region. Avoid Esbilac and any puppy formulas! Feed twice a day only
for healthy babies. It may be easiest to start with a 3 cc/ml syringe or an eyedropper. Feed only with the bunny sitting upright
, and point syringe down towards bottom or side of mouth, so if too much comes out, the baby does not aspirate. At first, they may only take a few drops at one feeding until they are not stressed and used to it.
Newborn to One Week: 2 – 2+1/2 cc/ml each feeding (two feedings per day).
1-2 weeks: 5-7 cc/ml each feeding (two feedings per day). (depending on bunny..may be much less if smaller rabbit!) Newborn babies (if eyes closed) all need to be stimulated to urinate and defecate prior to or following feeding until their eyes open.
2-3 weeks: 7-13 cc/ml each feeding (two feedings). Domestic eyes open around about 10 days of age. Start introducing them to timothy and oat hay, pellets and water. As well as fresh greens! Dandelion greens and hay are very important for wild rabbits.
3-6 weeks: 13-15 cc/ml each feeding (two feedings–again, may be less depending on size of rabbit! Possibly half this at most.) Cottontails wean and release about 3-4 weeks whereas domestic rabbits are 6 weeks.
Only handle a wild bunny only during feedings because excessive handling can be extremely stressful or potentially deadly. Most die from overfeeding and|or stress.
Here's another recipe for formula if you don't want to use the one I listed above:
RABBIT MILK FORMULA
1 can of sweetened condensed milk or fresh goat's milk (don't use cow's milk)
3 tablespoons heavy cream
3 tablespoons Karo corn syrup
1 egg yolk
Combine ingredients in a plastic bowl. Warm in microwave and heat mixture until it's slightly above room temperature. Test it by putting a few drops of the formula on your wrist first because you don't want to accidentally scald the babies.
I would read this article to find more information, it's very helpful:
I hope you can find a professional to care for your wild bunnies!! Wild rabbits need an experienced caretaker or it's likely they won't survive.