Stand on the floor with an imaginary horse between your thighs....
First, do your rising style which I'm guessing is an up-down that involves bending and straightening in your ankles and knees?
Now - and do this slowly -
Sit on your imaginary horse, and slowly push your pelvis forward. This movement will create a rise from your knees, but a much smaller one than the first rising. Your upper body and head will be rising, but very little.
Now hold on to your imaginary reins, keep your upper body soft and relaxed, and repeat.
Aren't you glad I told you to do this in private?
Get up, get going, seize the day. Enjoy the sunshine, the rain, cloudy days, snowstorms, and thunder. Getting on your horse is always worth the effort.