My wife's 2011 Rogue has the same engine, the QR25DE.
Manual says 3750 miles for "severe" use, which is defined as anything other than open highway with no dust between 40 and 80 degrees. So, Nissan basically says everyone who uses a car under normal conditions is in "severe" service. [censored].
5k dino changes with jobber filters is fine. And 2011 spec'd 5w-30, so the 0w-20 is not a mechanical necessity but rather a legal/regulatory one.
My 2 cents - ditch the thinner oil, use a 0w-30 or 5w-30, change at 5k if you use dino oil and go longer with a synthetic, to the point where you're comfortable.