High Level

Using autopilot to hit R.

Spoiler: Video

The video shows a very clever nudge on R. I never saw it so my gameplay is different. If i had read the hint then my life would have been a lot easier..

Spoiler: Alternative

herded both Rs round by the double draggable so they headed to the parallel stairs. Block both R separately up the shorter stair. One R gets onto the back draggable. Put B on draggable below staring position and tap and lower and B moves to wedge and easy to tap grass surprisingly. Swap R and B then autopilot B onto R. Then a fancy autopilot over the head of the other R to force it left to go to draggable . Place R on R and SSS to get B back. Remainder same as video.

@ridgerunner
Master-level operation! Thx for sharing~

...
@ridgerunner

sorry i laughed mr ridge,
it just so funny haha...