Maybe this is just saying the same thing, but I wonder if you actually have an adequate basic work wardrobe established yet. If not, then you would be facing a) simply not having the items you need right now to get through a rotation of 10 days or so, and b) having too many things "going out" on you at once if some were well-worn to begin with. That would make it very hard to be on a program of only buying so many things per unit time if that program was intended as more of a wardrobe maintenance plan.
Whereas, if you have, say, 7-10 satisfactory outfits or whatever for work, and all items are in pretty good shape, then you can aim to budget and plan to replace/refresh/upgrade as you go along. That allows you to be looking for your best values, be ready to grab an item when it goes on sale, plan next season's additions, adjust to changing styles or body shape, and so on.