How to make behat wait for an element to be displayed on the screen before filling it?

When I click on a button, a new page opens with a form and I need to fill a field on that page.

However, as soon as the page starts loading, behat attempts to populate the field that has not yet been loaded.

I would like to put an implicit wait to wait for the field to be displayed before attempting to populate it.

   /**
    * @Given que preencho corretamente os campos da tela
    */
   public function quePreenchoCorretamenteOsCamposDaTela()
   {
    $faker = Faker\Factory::create();
    $this->getPage()->findField('voucher_subject')->setValue($faker->text);
    $this->getPage()->findField('voucher_nameRecipient')->setValue($faker->name);
   }

Does anyone can help me?