I second Pat's suggestion. Sometimes I can't plan like that, but most bows are going to be stiff for the last few inches, regardless. Leave em a little wide, cut side nocks to tiller and go ahead.
One other thing I HAVE done, but haven't for a whil,e is to go ahead and make the tips narrow, close to finished dimensions, and whittle them to points, like in the TBB where Baker describes tied on nocks, or the little wrapped nocks "like a Lifesaver". Taper to a point from the belly, leaving the back intact, and you'll have enough wood to grind the back flat to apply nock overlays.