Jamie, Do NOT beat yourself up over the loss of this lil guy!! That is why I asked in an earlier post.............Did the mother care for him? Did he have a sibling ?
My point was I have all to often seen a fawn "Saved" from their mother "neglecting" them .....................Only to have the same pain as you are having!
I had one EXACTLY like this guy last year Mother had buck and a doe cared for the buck cleaned him and the doe............But then I noticed she left the buck and got the doe fawn off with her and after REPEATED attempt to get him with her, She refused to have ANYTHING to do with hm!
Crooked legs and all we brought him to the house and he even drank about 2 oz on my wifes first try! Oh we CAN save him.............I built him splints,a hoist to suspend him but allow him to stand until tired then rest in his sling. 6 days we worked and watched him gain ground...................Only to find him dead on the 7th morning!
The thing WE have to realize is we try to out smart mother nature and attempt to save animals that for what ever reason are headed towards death...........No matter what!
Sorry for your loss................Been there done that!
Best of Luck