That raises a question: how do you safely stop a daily low dose aspirin regimen? Are we talking about cutting tiny pills in half, then quarters, etc. over a period of a month?
When taking baby Aspirin and having anticipated bleeding (e.g. planned surgery or dental work), hematologist's advice was to start preparing about two weeks in advance: take pill every other day for about a week, then stop for another week.
This paper tells The American College of Chest Physicians' recommendation is stopping 7-10 days in advance, in the clinical study they measured 96 hours (4 days) for "normalizetion of platelet reactivity":
In my case it was easy: spend a month in the hospital. This was after a roller skating accident that gave me a huge brain hemorrhage. The hospital doctors went over all my prescriptions and changed nearly everything.