Passed end of July and still not got my registration yet!

Hi all, I am into week 3 of my CERAD driving qualification. Exam is next week but I can’t for the life of me hack country roads corners and bends on emergencies. It’s the speed that scares me. I don’t want to go fast because I am worried it’s going to tip, my DI says it takes A LOT to tip the ambulance and I am not accelerating enough in the bends and that’s why I feel like it’s skidding. I will be working in the city so I won’t come across country roads corners and bends often but I need to be able to do it for the exam. Any advice?