It's a fact that brakes heat up if you taxi faster whether you apply braking force or not. The brakes are like a cars in that they don't have a space between packs, only light or heavy contact force.
If you are worried, keep your taxi speed down. Simple. Reverse is just going to cause wear and damage, if not today, then some day, especially on wing mounted engines close to the ground.
Brake wear can also be minimised by light dabs to keep the speed low, not larger applications from faster speeds.
It's always tempting to taxi faster, especially on long straight routes like secondary runways. where you have a good mile or more to get to the back of the queue.
Annoying as it is to see turboprops whizz past you, don't let it get to you. Slow and steady will keep the temps down. Or drive a 146 with big fans
