Dressage horse with sway back. HELP!
Ok, so I'm leasnig my new horse Spider from the guy that owns the farm I'm at and he has TONS of horses and none of them EVER get ridden. I just recently started riding him* i was too nervous before seeing he hasent been ridden in atleast 5 years!!! Well he has a sway back, its not too bad but I just dont want it to get worse... When I ride hes just fine & I've been doing reading and it says riding dressage helps alot... Should I just keep riding or what should I do?!?! Help! C: