I know how to make it jump all the time at your desired height but not with every few steps.
Basically, in the scene editor, you would put the enemy away from the floor (like 3 tiles higher than the floor you want the enemy to jump onto. In its actor editor, set the enemy's bounciness to 1. That would work but if it fall down, it will end up jumping to the height it had before jumping: far too high!