The lift has nothing to do with it. It just means the springs are a little taller. If may affect handling if not done right as you are changing the geometry of the stock suspension. Depending on the brand it may right a bit rougher and if the track bar was not adjusted you could have off set axles and or bump steer. If you haven't noticed poor handling then the lift was probably done correctly.even with a 2" lift?
What affects brake pads is the number and pressure of the application. For example if you see the red light several blocks ahead and you come off the gas and coast down until you have to apply the brakes, then you get better wear than if you come up and have to apply heavy braking to stop in time. Jack Rabbit starts and stops are rough on gas mileage and brakes.
For example I now have over 30K on my '17 Chief with the same brakes yours came with. My pads are still in good shape. However, I live in the table flat S. Georgia and most of my driving is in the country and on rural highways. I may go miles before I have to stop.
Mountainous curvy roads have a tendency to eat brakes.
Who does your tire rotations? I would not have the dealer do it. I have an independent tire shop do mine (have for 3 decades) and simply ask them to check the brake pads while they have the wheels off.
Plus when your pads get too thin you will know it quickly. There have little metal tell tales then when rubbing against a rotor squeal like a banshee. But, at that point they need to be replaced ASAP, so do your planning ahead of time. Find a mechanic that has a good reputation and ask him if he will install your parts.