Compass 2.0 diesel going into regeneration every 250 km in city use

Model S (O), 2.0 MultiJet automatic, 38,000 km. Bengaluru, so the car spends most of its life between 0 and 30 kmh.

The car started a regeneration cycle roughly every 250 km through last month. I know it by the idle climbing, the cooling fan staying on after shutdown and the smell. Highway runs are the opposite, I have done Bengaluru to Coorg and back without it starting once.

What I have done so far: switched to a longer weekend run every fortnight, stopped short trips under 3 km where I can, and had the intake cleaned at 35,000 km. The workshop says the car is behaving exactly as designed for my usage and that nothing is wrong.

Two things I want from other Compass diesel owners

1. What interval are you actually seeing in city driving, and does 250 km sound normal to you
2. If you have crossed 80,000 km on mostly city use, did anything change

Also worth knowing: what did the cleaning or replacement cost you, and where did you get it done. I would rather plan for it than be surprised by it.