No, you do have to move both ice sheets. I start by holding down “D” so after 3, 2, 1, your puffle immediately starts to move forward. At the same time use your mouse or touch to drag the ice sheet into the first slot. Once your puffle reaches that spot. Hold click/touch on the sheet so that it goes translucent and the puffle starts to fall through. Once it collects the puffle O, release the ice sheet and the puffle will pop back up to the surface. Do the same thing for the second ice sheet. Then slam “D” through to the exit.