That's possible. And of course "unplugging" the high-pressure pump is going to generate codes and in general introduce a degree of complexity to the process that's completely unneeded. As I posted, just using an oil can to fill the inlet fitting to the turbo with oil is plenty. That's pretty much what most engine manufacturers recommend for a "new" turbocharger and it's a good idea any time you have the oil line to the turbo disconnected. I've done hundreds that way with zero failures so far. Either it works or I'm just REAL lucky. In general, the more QUICKLY you can get the engine actually RUNNING and making FULL oil pressure the better. Which is why pretty much every pre-start process for a new or rebuilt or repaired engine is geared toward doing just that. RUNNING beats CRANKING every time.