I have just gone through something similar with my horse. I love dressage but he does not, and I don’t believe he ever did, and now cannot do the exercises due to arthritis. I have always done in hand work and started clicker training which he really lights up for. I had to change MY plans, forget about showing, and find something he seemed to enjoy. I have found it’s not the end of the world! It’s actually more fun to take the pressure off myself and him and just have fun! Which is what having a horse is really all about. Have fun with him! Let him tell you what he wants to do and you will both become closer and bond better.