You'll respond appropriately, but not overreact.

你会做出适当的回应，而不会反应过度。

youdao

In many cases, they overreact to a situation that is not really as severe as they think. But at the time, everything seems hopeless.

其实，在许多情况下，他们只是反应过敏罢了，情况根本并非他们想像中那么恶劣，只不过当时所有事情都似乎到了绝境。

youdao

And there are those who think the riots were indeed significant but believe the government should not overreact.

BBC: Landale online: Ministers split over riots reaction

But soldiers who are taught to react must not overreact.

CNN: Preparing for peace