What the original poster is doing is not rehabilitating. She is keeping a wild animal as a pet, which is illegal in most if not all states without special permits.
Please seek out a wildlife center. You are not doing this fawn any favors by treating it as pet. By treating it as you are, you...
You really need to get that fawn to a real wildlife rehabilitation center. Contact the DNR or BLM. A deer is not a pet. It is also highly likely it is illegal to possess it.
I understand you're attached to it, but it is not a pet. Even if you want to release it back into the wild you are...