Hello! I am taking jumping lessons once a week (jumping between 2' and 2'3 regularly) and leasing a horse for 2 additional days of riding. One thing I have been having difficulty with recently is with my stirrups moving back on my foot in my canter-->trot and trot--> canter transitions. I dont have any issues in picking up the canter from a walk, nor do I have an issue keeping my stirrups at the canter, but if the horse is cantering, and drops out of it into a trot unexpectedly, when I try to kick them up to the canter again, I have a tendency to grip with my knee/thigh so I'm not bouncing out of the saddle, move my leg back and lean forward to kick, which causes my stirrups to move around. I have less of an issue losing the stirrups if I plan a trot to canter transition or a canter to trot transition, but when the horse falls out of the canter and I quickly try to kick them to get back into the canter, my stirrups move around. I definitely find myself gripping with my legs at this point just so I'm not bouncing around as much in the fast/rough trot, so then when I go to kick I dont have enough weight in the stirrups to keep them in place. Also, another cause for the problem is that if the horse falls out of the canter and I am not expecting or anticipating it, I feel like for the first few strides of the trot, I bounce around a lot and have terrible balance before I can re-adjust, get balanced again, and kick up to the canter again. When I plan to drop down to a trot, I can tighten my core muscles and anticipate moving down to the trot, but when I'm cantering and I feel like the horse is about to fall out of the canter, instead of anticipating the trot, I try to push them into the canter more, but sometimes they still fall out of it and then I am still in the motion of trying to keep the canter rather than balancing for the trot. How do I keep better balance when the horse ignores my cues and falls out of the canter before I ask them go to down a gait? When I cue the horse to fall out of the canter, I dont have any issues with balance. Any tips would be greatly appreciated.