If that detailed blog can post a UOA, that would be great. 3000 km is a motorcycle interval. Following it on cars is a waste of money.
Get the air filter blasted with pressurized air once a month; get the tires pumped while you are at it. The car wash guys do it for free. Use a good oil filter. When owner's manuals say "dusty environment", they mean the type of environment in heavy construction zones and unpaved roads. Karachi's roads are mostly paved.
I assume that your get to your university in the morning, and get back in the evening. Even on really hot days, the temperature is not above 32*C in the morning and in the evening.
Any traffic is fine as long its not a bumper-to-bumper situation. If you are using 3rd and 4th gear frequently, the traffic is probably thin enough.
If your college is at least 8 km away from your home, you might consider the 8 months interval.
edit: does the owner's manual say anything about normal/severe service? If not, thats just Honda copy pasting the outdated generic 3k mile interval followed in the U.S. The service manual can give more details in this regard.