When an agile team's velocity is slowing down, it is essential to regularly evaluate and adjust how the team is performing. By using feedback loops in every sprint, the team lead can continuously assess the team's progress, identify bottlenecks, and address issues early on. These feedback loops, typically discussed in sprint retrospectives, provide an opportunity for the team to identify the root causes of challenges, such as miscommunications, and make improvements to ensure better performance in future iterations. This approach promotes ongoing reflection and adaptation, which are core principles of Agile.