Yea, I shouldn't worry too much about it. If you go off for 2 days, and one of the days you end up at least 300nm away from where you start, and you have stopped a couple of times, that that will do. I assume they just want to see you are capable of long distances rather than a £1000 burger.
My FAA CPL X/C was spread over a couple of days and > 600nm.