Honestly, I appreciate that you found a clever solution. Cheese is delicious.
In the first level, the easiest way is to NOT push the block off the cliff. Just jump down, hit the switch, then go back around. Now the way is open and you can jump off that block to reach the exit.
In the second level, the bunnies take turns going forward and hitting a switch that allows the other bunny to progress. Eventually they can both access the middle path to the exit.
In the third level you have one bunny on the top route, and another on the bottom. The top bunny pushes blocks down to the bottom level, and then goes to the exit. Then the bottom bunny can reach the exit.
Make sure to pick up your bunny buddy (B while running into them) and then enter the exit space to beat the level.