You will definitely need to grind this achievement after completing the game. To grind this fastest, first make sure you play through the game to Level 2-26 where you will earn an upgraded Force power. Then return to Level 2-24. Use your first two Obi Wan birds to force push the top two piles of blocks. ONLY blocks that become shrouded in blue count towards this achievement. On your second shot, as soon as the blocks turn a blue color, pause and restart the level. You can get between 25-35 blocks for each attempt of the level, earning around 150 blocks per minute. All 2000 should take around 15 minutes or less to grind.