If pre-bolus is about timing, bump-and-nudge is about steering — the technique of making small, early, targeted adjustments instead of waiting for big numbers and slamming them.
Today's idea
A bump is a small insulin response to a rising trend. A nudge is a small carb response to a falling one. Neither is a correction in the traditional sense. Both are pre-emptive — interventions made before a problem becomes a problem, when smaller amounts can do the work that bigger amounts would have to do later.
The Pro Tip series puts it this way:
When you drift toward the edge of the road, you don't turn the wheel ninety degrees. You make an imperceivable nudge that keeps you between the lines. Small inputs, early, produce no oscillation. Big inputs, late, produce the rollercoaster.
From Pro Tip 1007
This is the technique most people quietly arrive at on their own after years of management. The Pro Tips named it and made it teachable.
Small inputs, early, are easier than big inputs, late.
Today, notice if there's a moment when you would have waited for a number to get worse before acting — and what your trend was at the time. You're not being asked to act earlier. You're being asked to notice when earlier action would have been an option.
Small Sip #1456 — Blanket of Insulin
Was there a moment today when an earlier, smaller action could have changed the curve?