Rabbits, eh? We went through that last summer.
Two baby rabbits were found absent the mother. The internet said to leave them where you found them and the mother will come back. Yeah, well that was a lie. One of the poor creatures died overnight. We struggled mightily with the second and ended up turning the poor guy over to a rabbit rescue specialist, along with a healthy donation.
Her house was literally a rabbit haven. She had several of them just free-ranging all over, you can imagine the condition of the place. She was wicked nice though and clearly loved rabbits, maybe a bit too much. It was explained that even in the best care most abandoned baby rabbits don't make it.
Not trying to be discouraging, but maybe you want to find your own local rabbit rescue, assuming there is one near to you. Good luck!