A better day can bring a strong urge to catch up. The laundry is waiting, messages have piled up, and you miss the satisfaction of finishing things. It is understandable to use a window of energy when it appears. It can also be painful when doing so is followed by a difficult crash.
Dynamic pacing means adjusting demands to your changing capacity. Sometimes that means a shorter task. Sometimes it means less activity altogether. It does not require constant monitoring, and it cannot guarantee stable symptoms.
Look beyond the visible chores
A phone call, a noisy room, or a complicated form can be demanding too. When planning a day, leave space around those activities rather than counting only movement or housework. If you experience post-exertional malaise, account for delayed worsening and discuss pacing with someone familiar with your condition.
Choose one useful adjustment
You might sort only part of a drawer, sit while preparing ingredients, or ask someone else to make the call. A reminder can help you pause, but the timer should not dictate how much you must accomplish. There is no universally appropriate five-minute or ten-minute activity interval.
Keep a place to note unfinished tasks so you do not have to hold them all in your head. Returning to them later is an option, not a debt you must repay tomorrow.
Pacing can involve grief about doing less. You can acknowledge that disappointment while still making the choice that is gentler for your body today.
Further reading: CDC: Activity management and PEM.