I agree with Dennis. I do not believe we can beat mother's milk or her care.
Spending time with the newborns might prove significantly beneficial. When we started our fawns on the bottle, all weren't exactly enammered with our presence at first. In those cases, I would go in and lay with them(had them in the house). Pet them as they lay...then stop for a bit...and then pet them some more...and keep repeating this process until they would raise their head in comfort in your presence. When they hold their head up as you are petting them, instead of laying it flat and stiff out in front of themselves, and I'm of course talkin about raising their head up without getting up and taking off, it is then you have made significant progress in taming them. And from there, of course the more time you spend with them the tamer they will be.
As soon as momma has them dried off and fed them for the first time is the time to get in there and begin this process I have described to you, cause EVERY hour after that WILL make a difference in your ability to approach them successfully without them getting up and taking off, which of course all of them will eventually do anyway. But I believe that whatever time you spend with them up until that point will help them be tamer than they otherwise would have been...IF you have the time to do this.
Then, as Dennis suggested, feed them treats. One of the quickest ways into a deer's heart other than time spent with them is through their stomachs. I've always used bread for treats for my deer. Others use peanuts, but I would certainly think that as far as fawns go, they would start quicker eating on the bread.
Time spent with them...and feeding them treats, and you will have manageble deer to raise without bottle feeding. Deer are individuals, so even though 2 deer get the same amount of attention via treats and time, their demeanors will vary.
On more than one occassion, I have been able to pet mother raised deer. Also, on more than one occassion, I've not been able to pet a bottle fed fawn once they got older. Individualism weighs in yes, but first and foremost, it's all about the time you spend with them, and then of course the treats.
Best of luck to you Classic Canyon!