need algorithm to change sm/dwi stepfiles to 2 steps not 4

[aooga]

[ Story you can skip: I sprained my ankle and mostly recovered but not totally, the doctor says it might be my stepmania playing, cause my feet hit the pad at weird angles, not ideal for recovery. Any general tips? But the main solution I thought of ]

was to modify the simfiles and make the beat of the steps the same but change all the steps to down right, eg. all down and left to down, and up and right to right. not sure what to do with hands. anyways, any tips how to do this? It like a simple concept no? If I do that I figure it will morph into jumprope running in place, much easier on ankle recovery.
thanks!