Getting Started-Strech- Roll out?

First stretch series ever here. Tough go but excited to work out my kinks. 34 years old got told I need a hip replacement but going to hold off through diet/mobility and GB work. Question about Roll out(last exercise in middle split day). I can't seem to transition from straddle to the roll out without having the step-in my foot/compensate. What's the best thing to do to transition when you're beginning?

HI Justin simply elevate your hips with something like a bench. it is not immediately required to perform it on the floor.

Great idea thanks!