Mercury got injured

I had a lot of work stuff going on, then on my one week vacation, Mercury cut his fetlock open. Just below the place it bends, so it's taking forever to heal. He's on his third week of stall rest, with at least one more, possibly two or more, to come.
That knocks us out of the next three or four shows, and I'm not even sure we'll be ready by the end of September, when the last couple end.
It feels like it has been months since I've ridden. I'm starting to go a little crazy, because I'm supposed to get busy again next week at work until November, and it's a bummer that my three weeks "off" (with a normal work schedule), all I do is take Mercury out and watch him eat grass.