We went out this morning and he's still alive. The arrow has shifted in him and he's looking really rough, tongue out, shaking when he take a breath, and legs not curled up to his body but awkwardly laying out. He moved a little bit downhill maybe 100 yards. Once involving a drone I can't legally go in and shoot him again until 24 hours after the drone spots him so I'm stuck in a weird spot right now. The drone pilot said he has an loose legal obligation to continue to check on the deer if he believes it will die. We're headed out again tonight to see if he finally expires.
It sucks to see the buck like this and it's likely I'm just going to end up with a shitty story and some antlers since I bet the meat is bad. It's making me reconsider my bow setup, arrows, and broadheads. Thanks for the responses and I'll keep everyone updated on what happens.