Wow, great level but I was stuck here longer than I should had been. I had the right idea to dig away the platformer at the start, but I completely overlooked having the second lemming turn around on the blocker first before digging. The rest of the solution came easily after that. Before I finally realized this, everything I kept trying didn't work, as the zombie would get one of them before I could get the other tasks done. I also tried the idea of platforming twice at the start, interrupt the second platformer with a shimmier, dig down for a bit before blocking. This nearly works, except again the zombie catches the other one after some time.
Fun fact: Yet another level where my time taken is the digits of Pi, 3:14, but only in the first 3 digits