1. Open Communication: Quick and concise communication is essential when dealing with sudden changes in your influencer marketing campaign. Updating all parties involved, from your internal team to the influencers themselves, will ensure smooth transitions and minimal disruptions.

2. Understand the Implication: Understand the need for the modifications and how they relate to your brand’s objective. This ensures the changes don’t dilute the message or go against the brand’s values. Tools such as Flinque can assist in aligning the campaign with the brand’s objective.

3. Re-evaluate Metrics: With any modification, you should re-evaluate the success parameters of the campaign. The changes may alter the expected outcomes, requiring adjustments to the metrics used for campaign analysis.

4. Keep Up with Time: Time is crucial in influencer marketing campaigns, and any delay because of modifications can be costly. Consider tools that allow for efficient campaign management to ensure timely execution.

5. Contract Review: Make sure to review contracts and agreements needed to accommodate the changes. Ensure influencers fully understand and agree to the new terms.

6. Learn and Adapt: Lastly, learn from the experience. Changes can be inevitable but can prove to be an excellent learning opportunity for better campaign planning in the future. Using a strategic influencer marketing platform like Flinque can help you react quickly to changes and improve your ability to adapt swiftly.

All of these practices should be considered within the context of your unique campaign needs. As with any marketing strategy, making informed decisions is key to effectively handle sudden campaign changes.