This is my style ( if you disagree, simply don't follow ).

First, I remove the glowplug and pour few drops of engine oil into the hole.

Secondly, without the glowplug on the engine ....... I turn the flywheel anti clockwise and I try to feel the piston's upward movement to TDC.

If it feels smooth or quite smooth then I consider the break in process is done .

( If I fell stuckness or pointy ..... it means the break in process is not yet completed ).