Yeah, let's add another brain function while landing. Think about it. Major T said it, and I will elaborate a bit.

Once you get trimmed for a comfortable flight at whatever throttle you use you fly and do your thing. Ok. Now it's time to land and the landing process starts. You start at the downwind leg, and may last about 10 to 20 seconds. During that time, you are slowing down by reducing throttle. What are you going to trim for? Level flight? I don't think so because the process, by design, is to reduce speed and thus altitude.

Next, you reach your downwind altitude and your downwind speed, you maintain a lower altitude at that throttle setting. Ok.. no trim needed there, but do you have time to think about trim?

Now you make the turn to base then reduce throttle more. Trim again? in that 2 or 3 seconds of base flight? Again, I don't think so.

Now, you are turning to final. Reduce throttle the aircraft begins to descend. The rate of descent is determined by the throttle setting. Trim again? Trim for what? Level flight? Do you have time? Aren't you trying to reduce speed and altitude?

Now you are over the runway centerline (I certainly hope that's your goal, and if you did everything properly, you probably are..) and during the time from turn to base then turn to final, and landing, did you have time to think about trim adjustments? Is any needed? No, again, I don't think so.

Now you are very close to the ground and you "tap" the elevator to reduce speed yet more, then nose up, flair, and landing. Trim? Ummm... what for?

No trim adjustments needed during the process of landing, which begins at the turn to your downwind leg.