Personally, I think the info you found on the Meier Audio page is sensible and well-informed. I followed their advice, did a 24 break-in on some bass-heavy music on all my headphones, and then let them naturally 'age' with regular listening. Works for me, might work for you.
I've read some more 'extreme' and apparently 'expert' break-in methods here on this forum, but none of them are practical nor helpful. There was one fella who 'broke' his new headphones while breaking them in. Dum dum dum dum... (to the tune of Beethoven's 5th).