Analyzing your CTR should be a regular and strategic part of your campaign management routine. For ongoing campaigns, a weekly review of CTR can provide insights into performance trends without getting caught up in daily fluctuations. For shorter or more dynamic campaigns, a daily review might be necessary to make timely adjustments.
However, immediate changes should not be based on short-term data alone. Look for consistent trends and make data-driven decisions over a reasonable time frame to ensure that any alterations to the campaign are genuinely needed.