Antler Drop Still Delayed

Our 200" buck, Redoy Joe, still hasn't lost the second half of his antlers. It's been 3 months. He has new growth under the still remaining antler. It is still very well attached. He's tame enough to let me pull on it and it won't come off. Not sure what this will do to this year's antler growth. We have some really great 2-year olds that are coming along great.