i say between now and 2500 miles. you could switch to synthetic like the above post says at this point as well. i don't use that oil life monitor for anything. i have a schedule i follow. i sometimes get sidetracked. in a case like that i will change it within 1500 miles, or so, of the mileage i should have done it at. i do reset the monitor, i just don't wait for it to come on.
when i think about all the false indications people have experienced here about 4wd messages, and oil life monitor messages i have to wonder. if these things light up sometimes for no apparent reason what would happen to you if they decided to just not light up at all? so i just do it the old fashion way. that's just me. some will say i am wasting money on iol changes. fine. i would rather do that than pay it to the dealer for engine failure. and if it never happens that's okay too. kinda like when you pay your insurance each month. you don't have an accident each month, but the assurance is there.