When you do a task with multiple steps several times, do each step for everything at once, before moving to the next step. As opposed to doing all steps for each item and repeating.
Example: slicing apples requires splitting, coring, and slicing. It is faster to split all apples, core all apples, and finally slice all apples than it is to split, core, and slice each apple before moving to the next. You basically want to manufacture your slices in an assembly line.
I use a similar process for laundry. Throw likes into piles. Turn each pile right side out. Stack. Fold. I’ve heard people complain about laundry. I’ve seen the same people pull shirts out of the dryer one at a time and fold them.