Bro @ahmer2303 ask yourself and then decide.
As a layman, I only know that first 300 kms are the most critical part for an engine life. Major proportion of engine parts grinding is being done in this time, so I ask myself whether I should allow these grind tiny particles in engine till 1000 kms or I should lose some bucks and drain them out with a fresh oil.
Plus I think the guide book comes with bikes mostly follow Japanese standards and you know these bikes have to bear much extreme conditions here in Pakistan.