I say change it as often as you see fit.
If you want to change it every 2 weeks, go for it, its your dime. If you want to change it every 3-4 months, go for it!, if you want to change it at 2k, 3k, 4k miles, do, just remember to do it on a regular schedule, and do what makes you feel comfortable.
If you feel comfortable changing it every 3k then do it, if you feel comfortable doing it at 4k then fine, if you feel comfortable doing it at 1k then thats fine too, or at 2 weeks, its all good.
Just don't forget to change it.
I myself have also never heard of oil needing to break in. If thats the case, then why would you want to put in new oil, wouldn't the oil then come pre broken in from the manufacturer?
'92 300CE - Sold
2004 C240 - C7 Wheels
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.