Normally if my horse is lazy in the back end I will ride in half the size of the arena and slowly spiral in. Hope it works!
I am training a lazy horse as well! I like to do roundbacks to make her more aware of my cues, but I also make sure to change things up and focus on things that she likes to do, like ride in the field or something. I think the main thing is getting them excited to do something and make them feel good about themselves! 🐴☺️