Is there any preventive maintenance to extend the lifespan of Brake Booster?

What are the preventive maintenances to extend the lifespan of Brake Booster in Gen 3 (2013-2015)? Specially, if you are living in a hot city with bumper to bumper traffic congestions on a daily basis.

Is changing brake fluid (DOT 3) every 2 years or as soon as the moisture level goes above 2-3% the recommended practice in the mentioned scenario to extend life?

I specifically mentioned the model years because I read that the early Gen 3 models have been more prone to brake booster failure than the later ones.

I had replaced the Brake Booster Pump Motor with a used/reconditioned part about a year ago at 120K Kilometers (75K miles). I would need to replace to whole set (including the Master Cylinder) soon because the code for Abnormal Leak C1391 has just popped up.

I have never replaced the Brake Fluid during my ownership of the vehicle for last 5 years. So, wondering what I'd really need to follow post replacement of the mentioned parts.