Well generally in a heli, esp. when flown by a beginner, you are rarely applying full throttle so a break in is not really required. The main point of break in is to prevent brush arcing and resulting comm damage.....

However, break in can't hurt and will extend life and increase efficiency.

The best way to break in any cheap can motor is to remove it from the ship and run it (preferably at a lower voltage) in a glass of water!! The water dissapates any heat, acts as a brush lube and prevents arcing. You can tell a motor's break in is complete when there is a minimum of arcing at the brush. Make sure to oil the bushings after water break in.

An alternate method is just to run a pack or two at a very low throttle position.